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

Swimming becomes possible because of______law of motion.

Question # 3

An object is dropped from a height of 100 m. Its velocity at the moment it touches the ground is:

Question # 4

A stone is dropped from rest from the top of a tower 19.6 m high. The distance traveled during the last second of its fall is (giving g=9.8 m/ss)

Question # 5

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

Question # 6

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

Question # 7

To get a resultant displacement of 10 m, two displacement vectors of magnitude 6 m and 8 m should be combined

Question # 8

Biomass includes:

Question # 9

Dimensions of velocity are

Question # 10

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

Question # 11

Newton published laws of motion in his famous book "principia" in

Question # 12

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

Question # 13

A typical rocket consumes about

Question # 14

Which one of the following is dimensionless.

Question # 15

A car moves for half of its time at 80 km/h and rest half of time at 40 km/h, The total distance covered is 60 km. What is the average speed of the car?

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ECAT Physics Chapter 3 Important MCQ's

Sr.# Question Answer
1 A certain force gives an acceleration of 2 m/sec2to a body mass 5 kg. The same force would give a 20 kg object an acceleration of:
A. 0.5 m/sec2
B. 5 m/sec2
C. 1.5 m/sec2
D. 9.8 m/sec2
2 A the top of the trajectory of a projectile, the directions of its velocity and acceleration are
A. Perpendicular to each other
B. Parallel to each other
C. Inclined to each other at an angle of 45°
D. Anitparallel to each other
3 The effect of applying a force on a moving body is to change
A. its direction of motion only
B. its speed of motion only
C. both the direction and speed of motion
D. its inertia only
4 The direction of the acceleration is the same as that of
A. speed
B. velocity
C. both of them
D. none of them
5 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
6 A monkey sits on the pan of spring scale kept in an elevator. The reading of the spring scale will be maximum when
A. Elevator is stationary
B. Elevator cable breaks and it falls freely towards earth
C. Elevator accelerates downwards
D. Elevator accelerates upward
7 In the expression F x t, the force F is
A. total force
B. instantaneous force
C. average force
D. all of them
8 The dimension of linear inertia is:
A. MLT2
B. ML°T-2
C. ML°T°
D. MLT-1
9 The horizontal component of a projectile moving with initial velocity of 500 ms-1at an angle 60° to x-axis is
A. 500 ms-1
B. 1000 ms-1
C. 250 ms-1
D. Zero
10 The linear momentum of the body is defined as
A. p=ma
B. p=1/2ma
C. p=mv
D. p=1/2mv

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