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

Ethanol (alcohol) as a type of:

Question # 2

A snooker ball moving with velocity V collides head on with another snooker ball of same mass at rest. If the collision is elastic, the velocity of second snooker ball is

Question # 3

A typical rocket ejects the burnt gases at speeds over

Question # 4

The distance covered by a body in unit time is called.

Question # 5

The magnitude of the force producing an acceleration of 10 m/sec2in a body of mass 500 grams is:

Question # 6

Which of the following four statements is false?

Question # 7

Work done along a closed path in a gravitational force is:

Question # 8

Root out the conventional source of energy:

Question # 9

The second law gives the relationship between

Question # 10

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

Question # 11

Acceleration produced in a body by the force varies

Question # 12

Which quantity has the same units as impulse

Question # 13

A man fires a bullet of mass 200 g at a speed of 5 m/s. The gun is of one kg mass. By what velocity the gun rebounds backwards?

Question # 14

The projectile motion is composed of

Question # 15

A motorist travels A to B at a speed at 40 km/h and returns at speed of 60km/h. His average speed will be

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ECAT Physics Chapter 3 Important MCQ's

Sr.# Question Answer
1 Slope of velocity-time graph represents:
A. Acceleration
B. Speed
C. Torque
D. Work
2 Work done along a closed path in a gravitational force is:
A. maximum
B. Minimum
C. Zero
D. Unity
3 For a moving body, at any instant of time
A. If the body is not moving the acceleration is necessarily zero
B. If the body is slowing, the retardation is negative
C. If the body is slowing, the distance is negative
D. If displacement, velocity and acceleration at that instant are known, we can find the displacement at any given time in future
4 The projectile attains maximum horizontal range when it is projected at an angle of
A. 30°
B. 45°
C. 60°
D. 75°
5 Root out of the conventional source of energy:
A. Energy from biomass
B. Hydroelectric energy
C. Geothermal energy
D. None of these
6 A snooker ball moving with velocity V collides head on with another snooker ball of same mass at rest. If the collision is elastic, the velocity of second snooker ball is
A. Zero
B. Infinity
C. V
D. 2 V
7 A body falls freely from rest. It covers as much distance in the last second of its motion as covered in the first three seconds. The body has fallen for a time of
A. 3 s
B. 5 s
C. 7 s
D. 9 s
8 A ball is thrown upwards with a velocity of 100 m/s. It will reach the ground after
A. 10 s
B. 20 s
C. 5 s
D. 40 s
9 In an elevator moving vertically up with an acceleration 'g' the force exerted on the floor by a passenger of mass M is
A. Mg
B. 1/2 Mg
C. Zero
D. 2 Mg
10 Acceleration in a body is always produced in the direction of :
A. Velocity
B. Weight
C. Force
D. Both B and C

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