In S.H.M., acceleration, a – x or a = – kx. (c) As turning of ball is not smooth, thus the distance covered by ball is not large in the reasonable time. Speed of combustion products w.r.t. A particle executes the motion described by x(t) = x. 3.4 (displacement x is from ground and all quantities are +ve upwards). (d) During upward motion. 2. Let vc be the speed of cyclist. (a) What is the direction of acceleration during the upward motion of the ball? 16. Check the below NCERT MCQ Questions for Class 11 Physics Chapter 6 Work, Energy and Power with Answers Pdf free download. (b) the particle moving along positive x-direction comes to rest periodically and moves backward. Is it correct to say from the graph that the particle moves in a straight line for t < 0 and on a parabolic path for t > 0? In one dimensional motion, instantaneous speed v satisfies 0 ≤ v < v. (a) The displacement in time T must always take non-negative values. MCQ Questions for Class 11 Physics with Answers Chapter Wise PDF Download Practicing MCQ Questions of Class 11 will help you be clear about concepts as well as enhance your subject knowledge. Answer: (a) The railway carriage moving without jerks between two stations, so the distance Here you can get Class 11 Important Questions Physics based on NCERT Text book for Class XI. (Take g = 9.8 m s-2 and neglect air resistance). Question from very important topics are covered by NCERT Exemplar Class 11.You also get idea about the type of questions and method to answer in your Class 11th … He throws two balls vertically, one at t = 0 and other after a time interval (less than 2 seconds). As the Syllabus of Class 11 Physics is vast you can cover all the concepts by solving the Multiple Choice Quiz Questions for 11th Class. If Vj and v0 represent the velocities of jet and observer respectively, then vj – vo = 500 km h-1 3.1), there is only one graph for which average velocity over the time intervel (0, T ) can vanish for a suitably chosen T. Which one is it? Momentum is mass x speed in magnitude. 25. The truck gives a signal that it is going to stop at emergency. Ans: Class 11 CBSE students must solve extra questions for Class 11 Physics Chapter 3 Motion in A Straight Line as it will allow them to have a better practice. Answer: It is not correct to say that the particle moves in a straight line for t < 0 (i.e., -ve) and on a parabolic path for t > 0 (i.e., + ve) Again a = – kx will be positive (i.e., a > 0). (a) the particle moving along positive x-direction comes to rest periodically and moves forward. Use Multiple Choice Type Questions and practice well. 10. We have provided Motion in a Straight Line Class 11 Physics MCQs Questions with Answers to help students understand the concept very well. (a) Angular momentum and Planck's constant first is given by x2 (t) – x1 (t) = 15t We have provided Work, Energy and Power Class 11 Physics MCQs Questions with Answers to help students understand the concept very well. MCQ Questions for Class 11 Business Studies with Answers were prepared according to the latest question paper pattern. If the lift starts moving up with a uniform speed of 5 m s-1 and the boy again throws the ball up with the maximum speed he can, how long does the ball take to return to his hands? (a) the direction of motion of the ball changes every 10 seconds. Time taken to reach office while walking = (2.5/5 ) h=1/2 h Physics Class 11 Important Questions are very helpful to score high marks in board exams. Answer: Question 3. At each collision with the floor, the ball loses one tenth of its speed. Calculate the relative speed of the balls as a function of time. (c) A spinning cricket ball that turns sharply on hitting the ground. (b) What are the velocity and acceleration of the ball at the highest point of its motion? 18. Question 3. Estimate how much force such a drop would exert on you. Give the signs of position, velocity and acceleration variables of the particle at t = 0.3 s, 1.2 s, – 1.2 s. (a) Einstein (b) Henri Becquerel (c) Newton (d) C.V.Raman (b) Henri Becquerel. (since the given v-t graph is not straight). between two stations is considered to be large as compared to the size of the train. (d) with positive value of acceleration must be speeding up. A graph of x versus t is shown in Fig. Here we have provided NCERT Exemplar Problems Solutions along with NCERT Exemplar Problems Class 11.. (b) with, zero speed may have non-zero velocity. This motion is represented by the straight line BC in the graph. Therefore the train is considered as a point object. Physics MCQs for Class 11 Chapter Wise with Answers PDF Free Download is very important for students who want to score good marks in their CBSE board examination. Distance to be covered = 50 m = 0.05 km 0.05 km CBSE and NCERT students can refer to the attached file. Students who can Practice Chapter-wise CBSE Class 10 Science Multiple Choice Questions with Answers to improve your score in Board Exams. During an elastic collision, the total K? (d) To what height does the ball rise and after how long does the ball return to the player’s hands? However, a = -kx will be +ve (a > 0). The later ball is thrown at a velocity of half the first. What is the total displacement of the bird? The train is moving at a constant velocity of 10 m/s parallel to the direction of motion of the ball. While drawing the x-t graph, the scales chosen are as under: In Exercises 3.13 and 3.14, we have carefully distinguished between average speed and magnitude of average velocity. 21. Multiple Choice Questions (MCQ) for CBSE Class 11-science Physics chapters on Topperlearning. Two cars B and C approach car A in opposite directions with a speed of 54 km h-1 each. Answer: For first stone, 12. A bird is tossing (flying to and fro) between two cars moving towards each other on a straight road. Now, time taken to return home by an auto = 2.5/5 h =1/10 h =6 minute Question 3. Answer: Question 3. 3.3. The velocity-time graph of a particle in one-dimensional motion is shown below. Subject Experts have created these questions after in-depth analysis on the question paper pattern, exam trend and previous year papers. In graph (b) opposite motion is visible at the same time. (a) Magnitude of acceleration, when just released is maximum. When the first stone hits the ground, x1 (t) = 0 If not, suggest a suitable physical context for this graph. You also get idea about the type of questions and method to answer in your Class 11th examination. Here you can get Class 11 Important Questions Physics based on NCERT Text book for Class XI.Physics Class 11 Important Questions are very helpful to score high marks in board exams. (iii) At t = -1.2 s, x < 0, but here on increasing the time t, value of x becomes less negative. The graph (c) is not correct since it shows that the particle has negative speed at a certain instant. The instantaneous speed is always equal to the magnitude of instantaneous velocity. Its velocity at time t is given by v(t) = 2t (3-t); 0< t < 3 and v (t)=–(t–3)(6–t) for 3 < t < 6 s in m/s. These MCQ's are extremely critical for all CBSE students to score better marks. Consider a ball thrown up. Answer: Here length of train A = length of train B = l = 400 m. As speed of both trains u = 72 km h-1 = 20 ms-1 in same direction, hence their relative velocity uBA = 0. A ball is dropped from a building of height 45 m. Simultaneously another ball is thrown up with a speed 40 m/s. If O is regarded as the origin for both time and distance, then at t = 9.00 am, x = 0 Out of the following pairs, which one does not have identical dimensions ? either parent=9 km h-1 Also calculate in km/h. 1. Question 3. As it is evident from the shape of v-t graph that acceleration of the particle is not uniform between time intervals t1 and t2. Question 3. If his speed is 9 m/s, the (horizontal) distance between the two buildings is 10 m and the height difference is 9 m, will he be able to land on the next building ? Question 3. (c) If we consider highest point of ball motion as x = 0, t = 0 and vertically downward direction to be +ve direction of x-axis, then (b) The graph shows that velocity changes again and again with the passage of time and every time losing some speed. A motor car moving at a speed of 72km/h can not come to a stop in less than 3.0 s while for a truck this time interval is 5.0 s. On a higway the car is behind the truck both moving at 72km/h. Answer: Greater in 3, least in 2; v > 0 in 1 and 2, v < 0 in interval 3. 3.5. CBSE Important Questions for Class 11 Physics, NCERT Important Questions for Class 11 Physics, NCERT Solutions for Class 8 Sanskrit Chapter 11 सावित्री बाई फुले, NCERT Solutions for Class 12th Macroeconomics : Chapter 6 – Open Economy Macroeconomics, Class 11 Important Questions for Physics - Motion in a Plane. Check the below NCERT MCQ Questions for Class 11 Physics Chapter 3 Motion in a Straight Line with Answers Pdf free download. (b) At the highest point, velocity of ball is zero but acceleration (g = 9.8 ms-2) in vertically downward direction. 4. (e) (A/B) overtakes (B/A) on the road (once/twice). because the x-t graph can not show the path of the particle. Thus in 8 s he covers only 2 m, as shown in the graph he would fall in the pit in 37 s. Class 11 Physics – Important Question answer for students preparing for XI Board … Physics Multiple Choice Questions (MCQs) on the topic of a Conservative force. Class 11 Study Notes, Computer Science, Informatics Practices, Physics, Business Studies, ... Class 11 - Physics - Half Year Sample Question Paper (2018-19) Chemistry. Relative velocity of the buses plying in the direction of motion of cyclist is vb – vc . After a long time of release, it is observed to fall with constant speed. 24. correctly represents the time variation of the relative position of the second stone with respect to the first. and initial distance between guard of train B from driver of train A = 450 + 800 = 1250 m. Question 3. A police van moving on a highway with a speed of 30 km h-1 fires a bullet at a thief s car speeding away in the same direction with a speed of 192 km h-1 . Benefits of Solving CBSE Class 11 Physics Chapter 3 The velocity-displacement graph of a particle is shown in Fig. Then, the magnitude of the average velocity of the particle over time-interval t is = Magnitude of displacement /Time-interval =0/t =0 How much time does the ball take to return to his hands? Relative position of second stone w.r.t. We hope the NCERT Solutions for Class 11 Physics Chapter 3 Motion in a Straight Line help you. Check the below NCERT MCQ Questions for Class 11 Physics Chapter 12 Thermodynamics with Answers Pdf free download. Obtain the distance traversed by the particle between (d) False. If after 50 s, the guard of B just brushes past the driver of A, what was the original distance between them? Suggest a suitable physical situation for each of the following graphs: – 5t2 + 15t+ 200 = 0 On simplification, t = 8 s The negative sign indicates that the combustion products move in a direction opposite to that of jet. 8. A monkey climbs up a slippery pole for 3 seconds and subsequently slips for 3 seconds. Determine graphically and otherwise how long the drunkard takes to fall in a pit 13 m away from the start. (c) average speed of ball over any 20 second interval is fixed. carefully and state, with reasons, which of these cannot possibly represent one-dimensional motion of a particle. Chapter 3 Motion and Force MCQs - 11 Mass is the qualitative measure of inertia? Students who can Practice CBSE Class 11 Physics Multiple Choice Questions with … The driver of B decides to overtake A and accelerates by 1 ms-1. Download MCQs for Class 11 Physics for important topics for all chapters in Class 11 Physics based on CBSE and NCERT pattern. If a particle has non-zero velocity, it must have speed. OA is the x-t graph of the motion when the woman walks from her home to office. (c) Speed of child w.r.t . 1. x (0) = 200 m, v (0) = 15 ms-1, a = -10 ms-2 (b) speed of ball changes every 10 seconds. (b) (A/B) starts from the school earlier than (B/A). To get fastest exam alerts and government job alerts in India, join our Telegram channel. 28. A man walks on a straight road from his home to a market 2.5 km away with a speed of 5 km h-1 .Finding the market closed, he instantly turns and walks back home with a speed of 7.5 km h-1 What is the (a)Magnitude of average velocity, and (b)Average speed of the man over the interval of time (i) 0 to 30 min. (c) Time taken by the child in (a) and (b)? Answer: In x-t graph of Fig. A man is standing on top of a building 100 m high. Verify that the graph shown in Fig. Question 3. Topics and Subtopics in NCERT Solutions for Class 11 Physics Chapter 3 Motion in a Straight Line: NCERT Solutions Class 11 PhysicsPhysics Sample Papers. Answer: (c),(d),(f). relative to the jet plane. 19. Speed is always positive. One car has a speed of 18 m/h while the other has the speed of 27km/h. ), a child runs to and fro with n speed 9 km h-1 (with respect to the belt) between his father and mother located 50 a part on the moving belt. NCERT Chapter 3 Marks Weightage. (c) (A/B) walks faster than (B/A). Download CBSE Class 11 Physics MCQs Answers to all MCQs in pdf, Physics chapter wise Multiple Choice Questions free. 11. Let initial distance between the two trains be ‘S’ then train B covers the distance (S + 11) = (S + 800) m in time t = 50 s when accelerated with a uniform acceleration a = 1 m/s2. Figure gives a speed-time graph of a particle in motion along a constant direction. (e) At the point of intersection (i.e., X), B overtakes A on the roads once. A stone falls under gravity. Multiple Choice Questions . Show in both (a) and (b) that the second quantity is either greater than or equal to the first. Similarly, if vc represents the velocity of the combustion products w.r.t jet plane, then vc – vg = -1500 km/h Multiple Choice Questions (MCQ I) At the highest point, speed is zero but the acceleration is non-zero. Register online for Physics tuition on Vedantu.com to score more marks in your Examination. a circular track is much greater. Therefore, it may represent a physical situation such as a ball falling freely (after thrown up), on striking the ground rebounds with reduced speed after each hit against the ground. ... Download Printable Worksheets, test papers for Class 11 Physics with questions answers for all topics and chapters as per CBSE, NCERT, KVS syllabus. After 8 second, only the second stone would be in motion. Hence, using equation s = ut + 1/2 at 2, we have. Her stay in the office from 9.30 am to 5.00 pm is represented, by the straight line AB in the graph. So, at t = 5.06 pm, x = 0 (c) Quantity A is displacement if motion is uniform. Each step is 1 m long and requires 1 s. Plot the x-t graph of his motion. Therefore ball cannot be considered as point object. Answer: Question 3. For maximum separation, t = 8 s So maximum separation is 120 m (b) Suppose, in the above example, the particle takes time t to cover the whole journey. (d) Quantity A is velocity if motion is uniformly accelerated. (Note: Obtain that speed which is relevant for damaging the thief s car). Students can also download CBSE Class 11 Physics Chapter wise question bank pdf and access it anytime, anywhere for free. (c) At C, the velocity and the acceleration vanish. (b) Plot qualitatively acceleration vs time graph. Important questions for Class 11th Physics provides you strategies to prepare for class 11th Physics examination. Download latest MCQs for Class 11 Physics in pdf free In graph (d) path length is shown as increasing as well as decreasing. The buses playing in the direction of motion of the cyclist go past him after every If the motion is viewed by one of the parents, then the answers to (a) and (b)are altered but answer to (c) remains unaltered. It rebounds from a wall with reduced speed and moves to the opposite wall which stops it. A player throws a ball upwards with an initial speed of 29.4 ms-1. CBSE Board has brought a major modification in the Exam Pattern and plans to introduce more MCQ Questions with Answers in the Board Exams. and at t = 9.30 am, x = 2.5 km At what distance the car should be from the truck so that it does not bump onto (collide with) the truck. x1 (t) = 200 + 30t – 5t2 Practicing given Class 11 Physics Chapter wise Important Questions with solutions will help in scoring more marks in your examinations. (Average speed of a particle over an interval of time is defined as the total path length divided by the time interval). Time=0.05 km/9k h-1=0.0056 h =20 S Chapter 3 - Motion in a Straight Line 8 videos | 10 docs | 12 tests NCERT Exemplar (Part - 1) - Motion … Download MCQ Questions of all subjects for Classes 6 to 12 from here. Estimate its momentum when it hits ground. The magnitude of the displacement of the particle is zero, because the particle has returned to its initial position. If the particle rebounds instantly with the same speed, it implies infinite acceleration which is physically impossible. The maximum number of questions from this chapter is 2, and the total marks you can achieve in this chapter in your final term examination are five marks. (b) Magnitude of average velocity over an interval of time, and the average speed over the same interval. As pointed out earlier, the man covers 2 m in 8 s so, he will cover 8 m in 32 s. But at the end in 5 s he would cover another 5 m i.e., 32 s + 5 s = 37 s, he would cover 8 m + 5 m = 13 m. Thus, he would fall in the pit in 37th second. (a) with zero speed at an instant may have non-zero acceleration at that instant. Two trains A and B of length 400 m each are moving on two parallel tracks with a uniform speed of 71 km h-1 in the same direction, with A ahead of B. An object falling through a fluid is observed to have acceleration given by a = g – bv where g = gravitational acceleration and b is constant. When this stone hits the ground, x1(t) = 0 .-. Human response time is 0.5s. For an observe a stationary platform outside, what is the NCERT Solutions Class 11 Business Studies, NCERT Solutions Class 11 Entrepreneurship, NCERT Solutions Class 11 Indian Economic Development, NCERT Solutions Class 11 Computer Science, Chapter 7 System of particles and Rotational Motion, Chapter 9 Mechanical Properties Of Solids, Chapter 10 Mechanical Properties Of Fluids, NCERT Solutions for Class 10 Science Chapter 1, NCERT Solutions for Class 10 Science Chapter 2, Periodic Classification of Elements Class 10, NCERT Solutions for Class 10 Science Chapter 7, NCERT Solutions for Class 10 Science Chapter 8, NCERT Solutions for Class 10 Science Chapter 9, NCERT Solutions for Class 10 Science Chapter 10, NCERT Solutions for Class 10 Science Chapter 11, NCERT Solutions for Class 10 Science Chapter 12, NCERT Solutions for Class 10 Science Chapter 13, NCERT Solutions for Class 10 Science Chapter 14, NCERT Solutions for Class 10 Science Chapter 15, NCERT Solutions for Class 10 Science Chapter 16, CBSE Previous Year Question Papers Class 12, CBSE Previous Year Question Papers Class 10, Kinematic equations for uniformly accelerated motion. NCERT Exemplar Class 11 Physics is very important resource for students preparing for XI Board Examination. (d) Magnitude of displacement is always maximum whenever speed is minimum. Question from very important topics are covered by NCERT Exemplar Class 11. For the one-dimensional motion, described by x = t–sint. (e) Estimate the order of magnitude force on umbrella. Practice is the only key for success […] In this case of small interval of time, the magnitude of the displacement is effectively equal to the distance travelled by the particle in the same interval of time. CBSE Class 11 - Physics - Units and Measurements - MCQs Multiple Choice Questions . 13. (a) (A/B) lives closer to the school than (B/A). (Take acceleration in the backward direction as positive). (c) At what time is its acceleration maximum in magnitude? Multiple choice questions help to develop understanding of all key points of chapter. Along time-axis, one division equals 1 hour. In which interval is the average acceleration greatest in magnitude? (d) A and B reach home at the (same/different) time. (d) Average velocity for the motion between A and D is positive. 3.2 describes the motion of a particle in a straight line. NCERT Exemplar Class 11 Physics is very important resource for students preparing for XI Board Examination. Answer: (a) Suppose a particle goes from point A to B along a straight path and returns to A along the same path. (a) Plot qualitatively velocity vs time graph. Important & Chapter-wise MCQ Questions for Class 11 Physics with Answers PDF are furnished here for the students who are preparing for the CBSE 11th Board Exams. Since there is a linear relationship between x2(t) – x1 (t) and t, therefore the graph is a straight line. If you have any query regarding NCERT Solutions for Class 11 Physics Chapter 3 Motion in a Straight Line, drop a comment below and we will get back to you at the earliest. What will be its speed vb be the speed of 54 km h-1 are correct for the... The same time which is it the least a fixed direction is shown in Fig is +ve ( i.e. a. Positive ) so that it is a common observation that rain clouds can at. And Assume that the second stone w.r.t 500 km/h question from very important resource for students preparing for XI examination. Mcq Questions of all key points of Chapter throws two balls vertically, one division 1! An observer on ground = 500 km/h motion between a and b connected. Brackets below: ( c class 11 physics ch 3 mcq questions is not large in the graph, the scales chosen as! A suitable physical context can be framed from any corner of the playing! Of 15 ms-1 and 30 ms-1 Chapter overview a ) a typical rain drop is about diameter... When the chosen position direction is along the direction of motion of the bus service and with what?... And all quantities are +ve upwards ) x is in accordance with the passage time... 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