ECAT Pre Engineering Physics Chapter 3 MCQ Test With Answer

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

Try The 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

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

Question # 2

If rope of lift breaks suddenly. The tension exerted by the surface of lift is (a=Acceleration of lift)

Question # 3

The direction of the linear momentum is the direction of

Question # 4

Blomass includes:

Question # 5

When two protons are brought closer potential energy of both of them:

Question # 6

When a shall explodes a mid-air, the total momentum of its fragments is

Question # 7

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

Question # 8

Inertial frame of references are those frame of references which are moving with

Question # 9

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?

Question # 10

A projectile on its path gets divided into two pieces at its highest point. Which is true?

Question # 11

A force of 50 dynes is acted on a body of mass 5 g which is at rest, for an interval of 3 seconds, then impulse is

Question # 12

What will be the ratio of the distance moved by a freely falling body from rest in 4th and 5th seconds of journey?

Question # 13

Essential characteristic of equilibrium is

Question # 14

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 # 15

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

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ECAT Physics Chapter 3 Important MCQ's

Sr.# Question Answer
1 If the values of instantaneous and average velocities are equal, the body is said to be moving with
A. uniform acceleration
B. uniform speed
C. variable velocity
D. uniform velocity
2 When a bicycle is in motion but not pedaled, the force of friction exerted by the ground on the two wheels is such that it acts
A. In the backward direction on the front wheel and in the forward direction on the rear wheel
B. In the forwards directions on the front wheel and in the backward direction on the rear wheel
C. In the forward direction on both the wheels
D. In the backward direction on both the wheels
3 A change in position of a body from its initial position to its final position is known as
A. relative motion
B. displacement
C. distance
D. acceleration
4 The product of force and time is called
A. acceleration
B. linear momentum
C. angular momentum
D. impulse
5 If m is the mass of the gases ejected per second with velocity v relative to the rocket of mass M, then the acceleration of rocket is
A. a = M/mv
B. a = mM/v
C. a = mv/M
D. a = v/mm
6 The projectile attains maximum horizontal range when it is projected at an angle of
A. 30°
B. 45°
C. 60°
D. 75°
7 An object is dropped from a height of 100 m. Its velocity at the moment it touches the ground is:
A. 100 m/sec
B. 140 m/sec
C. 1960 m/sec
D. 196 m/sec
8 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?
A. Their range will be same
B. Their maximum height will be same
C. Their landing velocity will be same
D. Their time of flight will be same
9 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
A. Zero
B. g
C. -g
D. V + g
10 If the slope of the velocity-time graph increases at constant rate with time, then the body is said to have
A. uniform deceleration
B. uniform negative acceleration
C. average acceleration
D. uniform positive acceleration

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