MDCAT Physics Chapter 2 online mcq test with answers for chapter 2 (Work and Energy)

Question # 1

Two bodies are projected at angle 𝜽 𝒂𝒏𝒅 (𝟗𝟎 − 𝜽) to the horizontal with the same speed. The ratio of their times of flight is:

sin 𝜃 : 1 A
cos 𝜃 : 1 B
sin 𝜃 : cos𝜃 C
cos 𝜃 : sin𝜃 D

Question # 2

The time of flight of a projectile is maximum when angle of projection is:

30 Degree A
45Degree B
60Degree C
90Degree D

Question # 3

Newton’s third law concerns the forces of interaction between two bodies. Which of the following statement relating to the third law is not correct:

The two forces must be the same type A
The two forces must act on different bodies B
The two forces are always opposite in direction C
The two forces are equal and opposite so the bodies are in equilibrium D

Question # 4

A boy is travelling from Lahore to Karachi with uniform velocity . Its

Speed changes A
Acceleration changes B
Direction of motion changes C
Displacement from origin changes D

Question # 5

A body of mass m having an initial velocity v, makes head on elastic collision with a stationary body of mass m. After the collision, the body of mass m comes to rest and only the body having mass M moves. This will happen only when:

m>>M A
m<<M B
) m=M C
m=1M D

Question # 6

A man has weight 980 N in a stationary lift. What will be his weight if the lift starts moving up with anacceleration of 4.9 ms^-2

980 N A
1470 N B
1980 N C
1460 N D

Question # 7

Two astronauts in a satellite must have

Same masses A
Same real weights B
Same apparent weights C
None of these D

Question # 8

A body is in translational equilibrium if

P = 0 A
L = 0 B
F = 0 C
 = 0 D

Question # 9

A rider uses Motorcycle safety helmet that extends the time of collision during accident hence decreasing the

Change of collisio A
Force acting B
Velocity C
Impulse D

Question # 10

If velocity time graph is a straight line parallel to time axis then body is

Moving with zero acceleration A
Moving with constant velocity B
Covering equal displacement in equal intervals of time C
All of these D

Question # 11

Two bodies are projected at angles  and (90°–) with the horizontal at the same speed.The ratio of their maximum heights is

1 : 1 A
1 : tan  B
1 : tan  C
tan² : 1 D

Question # 12

Vertical component of velocity of the projectile at any instant ‘t’ from the ground is given by:

𝑣𝑖𝑐𝑜𝑠𝜃 A
𝑣𝑖𝑐𝑜𝑠𝜃 − 𝑔t B
𝑣𝑖𝑠𝑖𝑛𝜃 − 𝑔t C
𝑣𝑖𝑠𝑖𝑛𝜃 + 𝑔t D

Question # 13

Two projectiles ‘A’ and ‘B’ are thrown with same speed but at angle of 40 degree and 50 degree with the horizontal. The horizontal range of ‘A’ will be:

Equal to that of ‘B’ A
Greater than that of ‘B’ B
Less than that of ‘B’ C
4/5times that of ‘B’ D

Question # 14

The angular momentum of a body changes from 30 J-S to 50 J-S in 0.5 sec. The torque acting on it is

40 N-m A
100 N-m B
50 N-m C
150 N-m D

Question # 15

A machine gun fires ‘n’ bullets per second and the mass of each bullet is m. If v is the speed of each bullet then the force exerted on the machine gun is:

mng A
mnv B
mnvg C
mnv/g D

Question # 16

As in linear motion force determines linear acceleration where as in circular motion torque determines its

Angular acceleration A
Linear acceleration B
Vibratory acceleration C
Tangential acceleration D

Question # 17

Swimming is possible on account of

1^st law of motion A
2^nd law of motion B
3^rd law of motion C
Newton’s law of Gravitation D

Question # 18

A stone is thrown upwards it returns to ground describing a parabolic path which of the following remains constant:

Speed of the ball A
Kinetic energy of the ball B
Vertical component of velocity C
) Horizontal component of velocity D

Question # 19

The centre of gravity of a triangular plate is at

On end of the plate A
The midpoint of any side of the plate B
The midpoint of any side of the plate C
The midpoint of any side of the plate D

Question # 20

What is the resultant force in the diagram shown?

Zero A
6N to left B
6N to right C
11N to right D

Sr.#	Question	Answer
1	The rate of change of momentum of a body falling freely under gravity is equal to its	A. Impulse B. Kinetic energy C. Pover D. Weight
2	Swimming is possible on account of	A. 1^st law of motion B. 2^nd law of motion C. 3^rd law of motion D. Newton’s law of Gravitation
3	In the absence of air resistance, a stone is thrown from P and follows a parabolic path in which the highest point reached is T. The vertical component of acceleration of stone is:	A. Zero at T B. Greatest at T C. ) Greatest at P D. the same at P as at T
4	If a body changes its momentum from 100 N s to 200 N s in 10 s then the unbalanceexternal force responsible to change the momentum is	A. 5 N B. 2.5 N C. 2n D. 10n
5	A boy is travelling from Lahore to Karachi with uniform velocity . Its	A. Speed changes B. Acceleration changes C. Direction of motion changes D. Displacement from origin changes
6	Newton’s third law concerns the forces of interaction between two bodies. Which of the following statement relating to the third law is not correct:	A. The two forces must be the same type B. The two forces must act on different bodies C. The two forces are always opposite in direction D. The two forces are equal and opposite so the bodies are in equilibrium
7	Two bodies are projected at angle 𝜽 𝒂𝒏𝒅 (𝟗𝟎 − 𝜽) to the horizontal with the same speed. The ratio of their times of flight is:	A. sin 𝜃 : 1 B. cos 𝜃 : 1 C. sin 𝜃 : cos𝜃 D. cos 𝜃 : sin𝜃
8	A rigid uniform bar of length 2.4 m is pivoted horizontally at its mid-point, weights are hung from two points of the bar as shown in diagram. To maintain horizontal equilibrium, a couple is applied to the bar: What is the torque and the direction of couple?	A. 40 N m clockwise B. 40 N m anti-clockwise C. 80 N m clockwise D. 80 N m anti-clockwise
9	A machine gun fires ‘n’ bullets per second and the mass of each bullet is m. If v is the speed of each bullet then the force exerted on the machine gun is:	A. mng B. mnv C. mnvg D. mnv/g
10	A stone is thrown upwards it returns to ground describing a parabolic path which of the following remains constant:	A. Speed of the ball B. Kinetic energy of the ball C. Vertical component of velocity D. ) Horizontal component of velocity

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MDCAT Physics Chapter 2 MCQ Test With Answer for (Motion & Force)

MCQ's Test For MDCAT Physics Chapter 2 Motion & Force Online Test

MDCAT Physics Chapter 2 Motion & Force Online Test

Two bodies are projected at angle 𝜽 𝒂𝒏𝒅 (𝟗𝟎 − 𝜽) to the horizontal with the same speed. The ratio of their times of flight is:

The time of flight of a projectile is maximum when angle of projection is:

Newton’s third law concerns the forces of interaction between two bodies. Which of the following statement relating to the third law is not correct:

A boy is travelling from Lahore to Karachi with uniform velocity . Its

A body of mass m having an initial velocity v, makes head on elastic collision with a stationary body of mass m. After the collision, the body of mass m comes to rest and only the body having mass M moves. This will happen only when:

A man has weight 980 N in a stationary lift. What will be his weight if the lift starts moving up with anacceleration of 4.9 ms-2

Two astronauts in a satellite must have

A body is in translational equilibrium if

A rider uses Motorcycle safety helmet that extends the time of collision during accident hence decreasing the

If velocity time graph is a straight line parallel to time axis then body is

Two bodies are projected at angles  and (90°–) with the horizontal at the same speed.The ratio of their maximum heights is

Vertical component of velocity of the projectile at any instant ‘t’ from the ground is given by:

Two projectiles ‘A’ and ‘B’ are thrown with same speed but at angle of 40 degree and 50 degree with the horizontal. The horizontal range of ‘A’ will be:

The angular momentum of a body changes from 30 J-S to 50 J-S in 0.5 sec. The torque acting on it is

A machine gun fires ‘n’ bullets per second and the mass of each bullet is m. If v is the speed of each bullet then the force exerted on the machine gun is:

As in linear motion force determines linear acceleration where as in circular motion torque determines its

Swimming is possible on account of

A stone is thrown upwards it returns to ground describing a parabolic path which of the following remains constant:

The centre of gravity of a triangular plate is at

What is the resultant force in the diagram shown?

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A man has weight 980 N in a stationary lift. What will be his weight if the lift starts moving up with anacceleration of 4.9 ms^-2