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

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 # 2

A body of weight 1 N has a kinetic energy of 1 joule when its speed is:

Question # 3

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

Question # 4

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

Question # 5

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

Question # 6

A typical rocket ejects the burnt gases at speeds over

Question # 7

The mass of a body measured by a physical balance in a lift at rest is found to be m, if the lift is going up with an acceleration a, its mass will be measured as

Question # 8

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

Question # 9

The horizontal component of a projectile moving with initial velocity of 500 ms-1at an angle 60° to x-axis is

Question # 10

A particle of mass 0.5 g moving along x-axis is located of x1= 15 m at t1= 5s and x2= 33 m at t2= 13s its average velocity is

Question # 11

The dimension of linear inertia is:

Question # 12

Which quantity has the same dimension as that of impulse?

Question # 13

A certain force gives an acceleration of 2 m/sec2 to a body if mass 5 kg. The same force would give a 29 kg object an acceleration of:

Question # 14

When the total displacement is divided by total time taken, we get:

Question # 15

Bodies which falls freely under gravity provides good example of motion under:

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ECAT Physics Chapter 3 Important MCQ's

Sr.# Question Answer
1 Maximum height of a bullet when fixed at 30 with horizontal is 11 m. Then height when it is fired at 60° is
A. 22 m
B. 6 m
C. 33 m
D. 7.8 m
2 The instantaneous velocity is define as the limiting value of Δd/Δt on the time intervalΔt approaches to
A. zero
B. maximum
C. minimum
D. infinity
3 The collision in which KE is conserved but momentum is not conserved is called:
A. Elastic collision
B. Inelastic collision
C. any these
D. None of these
4 A body of mass 5 kg is acted upon by a total change n momentum will be:
A. 10 NS
B. 100 NS
C. 140 NS
D. 200 NS
5 At the top of the trajectory of a projectile the acceleration is
A. The maximum
B. The minimum
C. Zero
D. g
6 The decrease in velocity per unit time is called
A. deceleration
B. acceleration
C. uniform acceleration
D. variable acceleration
7 A typical rocket ejects the burnt gases at speeds over
A. 400 ms-1
B. 40000m s-1
C. 40000 ms-1
D. 60000 ms-1
8 The motion of a projectile is
A. one dimension
B. two dimension
C. three dimension
D. all of them
9 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
A. m
B. 2 m
C. 4 m
D. Infinity
10 The path described by a projectile is called its
A. orbit
B. trajectory
C. range
D. distance

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