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

Which quantity has the same dimension as that of impulse?

Question # 2

Acceleration of a body is positive, if the velocity of the body is

Question # 3

A ball of mass m moving with uniform speed collides elastically with another stationary ball. The incident ball will lose maximum kinetic energy when mass of the stationary ball is

Question # 4

One KWh is equal to:

Question # 5

A dirty carpet is to be cleaned by heating. This is in according with______law of motion.

Question # 6

Graphs which are used to illustrate the variation of velocity of an object with time are called

Question # 7

When brakes are applied to a fast moving car, the passenger will be thrown:

Question # 8

According to the law of conservation of linear momentum, the total linear momentum of an isolated system

Question # 9

If the objects of different masses move with the same velocity, then it is more difficult to stop the

Question # 10

The quantity F x t is called as

Question # 11

A body is moving with constant velocity of 10 m/sec in the north-east direction. Then its acceleration will be:

Question # 12

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?

Question # 13

A lift is descending at a constant speed V. A passenger in the lift drops a coin. The acceleration of the coin towards the floor will be

Question # 14

A the top of the trajectory of a projectile, the directions of its velocity and acceleration are

Question # 15

Distance covered by a freely falling body in 2 sec will be

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ECAT Physics Chapter 3 Important MCQ's

Sr.# Question Answer
1 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
2 The magnitude of the force producing an acceleration of 10 m/sec2in a body of mass 500 grams is:
A. 3 N
B. 4 N
C. 5 N
D. 6 N
3 Velocity is a
A. scalar quantity
B. vector quantity
C. constant quantity
D. none of them
4 A body of mass 5 kg is acted upon by a constant force of 20 n for 7 seconds. The total change in momentum will be:
A. 10 NS
B. 100 NS
C. 140 NS
D. 200 NS
5 The consumption of energy by a 1000 watt heter in half an hour is:
A. 5 Kwh
B. 0.5 Kwh
C. 2.5 Kwh
D. 3.2 Kwh
6 A train cover 90 km in half an hour. the time taken by it to travel 15 km will be:
A. 20 minutes
B. 48 minutes
C. 10 minutes
D. 5 minutes
7 A man sitting in a bus travelling in a direction from west to east with a speed of 40 km/h observes that the rain drops are falling vertically down. To the another man standing on ground the rain will appear
A. To fall vertically down
B. To fall at an angle going from west to east
C. To fall at an angle going from east to west
D. The information given is insufficient to decide the direction of rain
8 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
9 A train is moving with a velocity of 25 m/s and a car is moving behind it by a velocity of 8 m/s in same direction. The relative velocity of train with respect to car is
A. 17 m/s
B. 33 m/s
C. 17.5 m/s
D. none
10 The consumption source if energy is:
A. Energy from blomass
B. Hydroelectric energy
C. Geothermal energy
D. None of these

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