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

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

Question # 2

The consumption of energy by a 1000 watt heter in half an hour is:

Question # 3

Find the total displacement of a body in 8 seconds starting from rest with an acceleration of 20 cm/s2

Question # 4

The sum of the magnitude of two forces acting at a point is 18 and the magnitude of their resultant is 12. If the resultant is at 90° with the force of the smaller magnitude, then their magnitudes are

Question # 5

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

Question # 6

One KWh is equal to:

Question # 7

The effect of applying a force on a moving body is to change

Question # 8

An object thrown upward with an initial velocity at certain angle with the horizontal and moving freely under the action of gravity is called

Question # 9

A car travels first half distance between two places with a speed of 30 km/h and remaining half with a speed of 50 km/h. The average speed of the car is

Question # 10

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

Question # 11

The three equation of motions are useful only for

Question # 12

Distance covered by a freely failing body n the first second of its motion will be:

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

The range of projectile is 50 m whenθ is inclined with horizontal at 15°. What is the range whenθ becomes 45°?

Question # 15

The path followed by the projectile is known as:

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ECAT Physics Chapter 3 Important MCQ's

Sr.# Question Answer
1 Swimming becomes possible because of______law of motion.
A. First
B. Second
C. Third
D. None of these
2 When a body is moving on a surface, the force of friction is called
A. Static friction
B. Dynamic friction
C. Limiting friction
D. Rolling friction
3 A body starting from rest covers a distance of 0.45 Km and acquires a velocity of 300 Kmh-1. its acceleration will be
A. 7.71 m s-2
B. 0.5m s-2
C. 0.15m s-2
D. 0.092m s-2
4 Acceleration in a body is always produced in the directin of:
A. Velocity
B. Weight
C. Force
D. Botha B and C
5 An inertial frame of reference is that frame of reference in which
A. a = 0
B. a > 0
C. a < 0
D. all of them
6 The product of force and time is called
A. acceleration
B. linear momentum
C. angular momentum
D. impulse
7 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
8 To get a resultant displacement of 10 m, two displacement vectors of magnitude 6 m and 8 m should be combined
A. Parallel
B. Antiparallel
C. At angle 60°
D. Perpendicular to each other
9 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
10 Which quantity has the same dimension as that of impulse?
A. KE
B. Power
C. Momentum
D. Work

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