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

Question # 1

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 # 2

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 # 3

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 # 4

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:

Zero at T A
Greatest at T B
) Greatest at P C
the same at P as at T D

Question # 5

Speedometer of an automobile measures

Average velocity A
Instantaneous velocity B
Acceleration C
Instantaneous speed D

Question # 6

What is the resultant force in the diagram shown?

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

Question # 7

In a one-dimensional elastic collision, the relative velocity of approach before collision is equal to:

Sum of the velocities of the bodies A
e times the relative velocity of separation after collision B
1⁄𝑒 times the relative velocity of separation after collision C
relative velocity of separation after collision D

Question # 8

Two railway trucks of masses m and 3m move towards each other in opposite directions with speeds 2v and v respectively. These trucks collide and stick together. What is the speed of the trucks after the collision?

v/4 A
v/2 B
v C
5v/4 D

Question # 9

If the range of a projectile is R, the potential energy will be maximum after the projectile has covered (from start) distance equal to:

R/2 A
R/4 B
R C
R/9 D

Question # 10

Two 8 N forces act on each end of the beam of length 0.60m. Two forces are parallel and acting opposite to each other, the angle between the force and beam is 60o , what is the torque of the couple exerted on the beam:

2.4 Nm A
4.2 Nm B
4.8 Nm C
9.6 Nm D

Question # 11

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 # 12

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 # 13

The distance covered by a body in time ‘t’ starting from rest is:

1/2 𝑡² A
vt B
𝑎𝑡² C
𝑎𝑡₂ D

Question # 14

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 # 15

Two astronauts in a satellite must have

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

Question # 16

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 # 17

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 # 18

A body is in translational equilibrium if

P = 0 A
L = 0 B
F = 0 C
 = 0 D

Question # 19

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 # 20

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

Sr.#	Question	Answer
1	Two astronauts in a satellite must have	A. Same masses B. Same real weights C. Same apparent weights D. None of these
2	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
3	Two bodies are projected at angles  and (90°–) with the horizontal at the same speed.The ratio of their maximum heights is	A. 1 : 1 B. 1 : tan  C. 1 : tan  D. tan² : 1
4	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
5	A ball takes ‘t’ second to fall from a height 𝒉𝟏 and ‘2t’ second to fall from a height 𝒉𝟐 then h1/h2 is:	A. 2 B. 4 C. 0.5 D. 0.25
6	Two railway trucks of masses m and 3m move towards each other in opposite directions with speeds 2v and v respectively. These trucks collide and stick together. What is the speed of the trucks after the collision?	A. v/4 B. v/2 C. v D. 5v/4
7	Speedometer of an automobile measures	A. Average velocity B. Instantaneous velocity C. Acceleration D. Instantaneous speed
8	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
9	A monkey is accelerating down a string whose breaking strength is two third of his weight. The minimumacceleration of the monkey should be	A. 1/3g B. g C. 2/3 g D. 0 m/s2
10	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

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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