ECAT Pre Engineering Physics Chapter 3 MCQ Test With Answer

MCQ's Test For Physics ECAT Pre Engineering Chapter 3 Motion and Force

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Physics ECAT Pre Engineering Chapter 3 Motion and Force

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Question # 1

If speed of electron is 5 x 105m/s. How long does it take one electron to transverse 1 m?

Question # 2

Linear momentum is a

Question # 3

A car travels first half distance between two places with a speed of 30 km/h and remaining half with a speed of 50 km/h. The average speed of the car is

Question # 4

What must be changing when a body is accelerating uniformly?

Question # 5

Slope of velocity time graph represents:

Question # 6

A typical rocket consumes about

Question # 7

A typical rocket consists of fuel

Question # 8

Change in momentum is one second is called:

Question # 9

Swimming is based on the principle of

Question # 10

The discuss used by athlete has a mass of 1 kg, its weight in newton is

Question # 11

If the velocity of the body decreases non-uniformly then the slope of the velocity-time graph will have

Question # 12


Swimming becomes possible because of______law of motion:

Question # 13

A body is dropped from a tower with zero velocity, reaches ground in 4s. The height of the tower is about

Question # 14

A non-inertial frame of reference is that frame of reference in which

Question # 15

Two projectiles are fired from the same point with the same speed at angles of projection 60° and 30° respectively. Which one of the following is true?

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ECAT Physics Chapter 3 Important MCQ's

Sr.# Question Answer
1 The second law gives the relationship between
A. mass and velocity
B. force and acceleration
C. velocity and acceleration
D. mass and weight
2 If a ball comes back to its starting point after bouncing off the wall several times, then its
A. total displacement is zero
B. average velocity is zero
C. none of them
D. both of them
3 When a bicycle is in motion, the frictional forces exerted by the ground are
A. In the forward direction on both the wheels
B. In the backward direction on both the wheels
C. In the forward direction on the front wheel and the backward direction on the rear wheel
D. In the backward direction on the front wheel and the forward direction on the rear wheel
4 One newton is a force that produces an acceleration of 0.5 m/sec2in a body of mass:
A. 2 kg
B. 3 kg
C. 4 kg
D. 8 kg
5 Rate of change of momentum is called
A. Impulse
B. Force
C. Torque
D. Momentum
6 If the velocity of the body decreases non-uniformly then the slope of the velocity-time graph will have
A. different values
B. same values
C. zero valves
D. constant valves
7 A boat of mass 40 kg is at rest, A dog of mass 4 kg moves in the boat with a velocity of 10 m/s. What is the velocity of boat?
A. 4 m/s
B. 2 m/s
C. 8 m/s
D. 1 m/s
8 A railway engine (mass 104kg) is moving with a speed of 73 km/h. The force which should be applied to bring it to rest over a distance of 20 m is
A. 3,600 N
B. 7,200 N
C. 10,000 N
D. 100,000 N
9 The magnitude of the force producing an acceleration of 10 m/sec2 in a body of mass 500 grams is:
A. 3 N
B. 4 N
C. 5 N
D. 6 N
10 Work done along a closed path in a gravitational force is:
A. maximum
B. Minimum
C. Zero
D. Unity

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