Motion in a Plane MCQS for NEET

1 One radian is defined to be the angle subtended where the arc length S is exactly equal to the?

A radius of the circle.

B diameter of the circle.

C circumference of the circle.

D half of radius of the circle.

View Answer

Answer:radius of the circle.

2 To attain maximum range, the projectile must be launched at an angle of?

A 0°

B 45°

C 90°

D 60°

View Answer

Answer:45°

3 A body makes a displacement of 4 m due East from a point O and then makes displacement of 3 m due North . Its resultant displacement from O

A 7 m

B 1 m

C 5 m

D 1 . 2 m

View Answer

Answer:5 m

4 A frictional track ABCDE ends in a circular loop of radius R, body slides down the track from point A which is at a height h of 5 cm. Maximum value of R for the body to successfully complete the loop is:

A 15/4 cm

B 5 cm

C 10/3 cm

D 2 cm

View Answer

Answer:2 cm

5 The dimensional formula for angular velocity is

A T^-1

B LT^-1

C L^-1T^-1

D L^-1T

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Answer:T^-1

6 The displacement of a particle is given by the expression y = at + bt² , where a and b are constants . The acceleration of the particle at any instant is given by

A 2b

B zero

C a + 2b

D at + 2b

View Answer

Answer:2b

7 Small angle produces?

A straight trajectory

B steep trajectory

C flat trajectory

D high trajectory

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Answer:flat trajectory

8 Centripetal acceleration is the acceleration which is always directed towards the centre of the?

A Parallelogram

B square

C circle

D ellipse

View Answer

Answer:circle

9 The angle between centripetal acceleration and tangential acceleration is?

A 180°

B 0°

C 90°

D 45°

View Answer

Answer:90°

10 A bucket containing water is tied to one end of a rope of length 2.5 m and rotated about the other end in a vertical circle. What should be the minimum velocity of the bucket at the highest point, so that the water in the bucket will not spill? (g = 10 m/s2)

A 7 m/s

B 4 m/s

C 2.5 m/s

D 5 m/s

View Answer

Answer:5 m/s

11 Which is a constant for a freely falling object?

A displacement

B velocity

C acceleration

D speed

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Answer:acceleration

12 The total flight requires a time that is?

A four times the time necessary to reach the maximum height.

B thrice the time necessary to reach the maximum height

C equal to the time necessary to reach the maximum height.

D twice the time necessary to reach the maximum height

View Answer

Answer:twice the time necessary to reach the maximum height

13 One ° (1°) is equal to?

A 0.1745 rad

B 0.01745 rad

C 0.001745 rad

D 7.1745 rad

View Answer

Answer:0.01745 rad

14 The path followed by a projectile is called its?

A Territory

B Treasury

C Tractor

D Trajectory

View Answer

Answer:Trajectory

15 A cyclist goes round a circular path of circumference 343 m in s. The angle made by him, with the vertical is

A 44°

B 42°

C 43°

D 45°

View Answer

Answer:45°

16 Centripetal acceleration is the acceleration which is always directed towards the centre of the?

A Parallelogram

B square

C circle

D ellipse

View Answer

Answer:circle

17 A body of mass m performing UCM with frequency n along the circumference of circle having radius r, force is given by

A 4pnm²

B 4p²n²m

C p²n²mr

D 1/2 pnm²

View Answer

Answer:4p²n²m

18 The horizontal distance from the origin (x=O, y=O) to the point where the projectile returns (x = R, y=O) is called?

A Vertical component of the projectile

B Trajectory of the projectile

C maximum height of the projectile

D Range of the projectile

View Answer

Answer:Range of the projectile

19 A cyclist is moving in a circular track of radius 80 m, with a velocity of 36 km/hour. In order to keep his balance, he has to lean inwards from the vertical through an angle q. If g = 10 m/s2, then q is given by

A tan-1 (1/8)

B tan-1 (1/4)

C tan-1 (4)

D tan-1 (2)

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