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

Question # 1

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?

40 N m clockwise A
40 N m anti-clockwise B
80 N m clockwise C
80 N m anti-clockwise D

Question # 2

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 # 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

Speedometer of an automobile measures

Average velocity A
Instantaneous velocity B
Acceleration C
Instantaneous speed D

Question # 5

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 # 6

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 # 7

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 # 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

select Which one of the following is not performing projectile motion

A gas filled balloon A
) Bullet fired from gun B
A football kicked C
A baseball shot D

Question # 10

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 # 11

A ball takes ‘t’ second to fall from a height 𝒉𝟏 and ‘2t’ second to fall from a height 𝒉𝟐 then h1/h2 is:

2 A
4 B
0.5 C
0.25 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

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 # 14

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 # 15

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 # 16

What is the resultant force in the diagram shown?

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

Question # 17

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 # 18

The angle of projection, at which the range of projectile would become half of its maximum value.

45Degree A
30Degree B
15Degree C
60 Degree 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

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

Sr.#	Question	Answer
1	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
2	What is the resultant force in the diagram shown?	A. Zero B. 6N to left C. 6N to right D. 11N to right
3	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	A. 980 N B. 1470 N C. 1980 N D. 1460 N
4	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
5	The angle of projection, at which the range of projectile would become half of its maximum value.	A. 45Degree B. 30Degree C. 15Degree D. 60 Degree
6	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
7	. Time rate of change of momentum is equal to	A. Force B. Impulse C. Velocity D. Both A and C
8	A rider uses Motorcycle safety helmet that extends the time of collision during accident hence decreasing the	A. Change of collisio B. Force acting C. Velocity D. Impulse
9	In a one-dimensional elastic collision, the relative velocity of approach before collision is equal to:	A. Sum of the velocities of the bodies B. e times the relative velocity of separation after collision C. 1⁄𝑒 times the relative velocity of separation after collision D. relative velocity of separation after collision
10	If velocity time graph is a straight line parallel to time axis then body is	A. Moving with zero acceleration B. Moving with constant velocity C. Covering equal displacement in equal intervals of time D. All of these

Latest Educational News Stories

Pakistan's Largest Database of Colleges and Universities

BS Programs

University Past Papers

University Results

Exam Results 2024

Study Abroad Programs and Opportunities for Pakistani Students

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

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 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