NCERT Class 11 Chapter 3 Physics Motion in a Straight Line MCQ

NCERT Class 11 Chapter 3 Physics Motion in a Straight Line MCQ | Questions & Answers: Students of Class 11 should make use of the Multiple Choice Questions that we have provided here with regards to the NCERT Class 11 Chapter 3 Physics Motion in a Straight Line topic. And we sincerely hope this article will be very helpful for you in improving your knowledge.

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1. A body is moving along a straight line path with constant velocity. At an instant of time the distance travelled by it is S and its displacement is D, then

A. D = S

B. D > S

C. D < S

D. None of these

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2. The location of a particle has changed. What can we say about the displacement and the distance covered by the particle?

A. Neither can be zero

B. One may be zero

C. Both may be zero

D. One is +ve, other is –ve

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3. The displacement of a body is zero. The distance covered

A. may or may not be zero

B. is not zero

C. is zero

D. depends upon the acceleration

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4. The numerical ratio of displacement to distance for a moving object is

A. equal to or less than 1

B. always equal to 1

C. always less than 1

D. always more than 1

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5. Which of the following can be zero, when a particle is in motion for some time?

A. Displacement

B. None of these

C. Distance

D. Speed

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6. If distance covered by a particle is zero, what can you say about its displacement?

A. It must be zero

B. It cannot be zero

C. It may or may not be zero

D. It is negative

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7. Which of the following is a one dimensional motion ?

A. Motion of train running on a straight track

B. Motion of satellite

C. Motion of air particle

D. Motion of snake

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8. The distance travelled by a body is directly proportional to the time taken. Its speed

A. remains constant

B. decreases

C. increases

D. becomes zero

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9. The slope of velocity-time graph for motion with uniform velocity is equal to

A. zero

B. final velocity

C. initial velocity

D. none of these

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10. The ratio of the numerical values of the average velocity and average speed of a body is

A. unity or less

B. less than unity

C. unity

D. unity or more

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11. What determines the nature of the path followed by the particle?

A. Both

B. Velocity

C. Acceleration

D. None of these

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12. The graph between displacement and time for a particle moving with uniform acceleration is a/an

A. parabola

B. ellipse

C. straight line parallel to time axis

D. straight line with a positive slope

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13. The acceleration of a moving body can be found from

A. slope of the velocity-time graph

B. slope of a distance-time graph

C. area under distance-time graph

D. area under velocity-time graph

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14. Acceleration of a particle changes when

A. speed changes

B. magnitude of velocity changes

C. direction of velocity changes

D. None of these

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15. The area under acceleration time graph gives

A. change in velocity

B. change in acceleration

C. distance travelled

D. force acting

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16. If a body travels with constant acceleration, which of the following quantities remains constant ?

A. None of these

B. Time

C. Velocity

D. Displacement

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17. Velocity time curve for a body projected vertically upwards is

A. straight line

B. ellipse

C. parabola

D. hyperbola

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18. Two trains, each 40 m long are travelling in opposite direction with equal velocity 20 m/s. The time of crossing is

A. 1s

B. 2s

C. 3s

D. Zero

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19. A body is thrown upwards and reaches half of its maximum height. At that position

A. its acceleration is constant

B. its velocity is zero

C. its velocity is maximum

D. its acceleration is minimum

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20. A body is thrown vertically upwards. If air resistance is to be taken into account, then the time during which the body rises is

A. less than the time of fall

B. greater than the time of fall

C. twice the time of fall

D. equal to the time of fall

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21. A boy starts from a point A, travels to a point B at a distance of 3 km from A and returns to A. If he takes two hours to do so, his speed is

A. 3 km/h

B. zero

C. 2 km/h

D. 1.5 km/h

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22. A body starts from rest and travels with uniform acceleration a to make a displacement of 6 m. If its velocity after making the displacement is 6 m/s, then its uniform acceleration a is

A. 6 m/s²

B. 2 m/s²

C. 3 m/s²

D. 4 m/s²

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23. Which one of the following is the unit of acceleration?

A. m/s

B. m/s²

C. km/hr

D. cm/s

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24. The dimensional formula for speed is

A. T^-1

B. LT^-1

C. L^-1T^-1

D. L^-1T

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25. The dimensional formula for acceleration is

A. [LT2]

B. [LT?2]

C. [L2T]

D. [L2T2]