ECAT Pre Computer Science Chapter 5 MCQ Test With Answer

MCQ's Test For ECAT Physics Chapter 5 Circular Motion

Try The MCQ's Test For ECAT Physics Chapter 5 Circular Motion

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ECAT Physics Chapter 5 Circular Motion

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Question # 1

The instantaneous acceleration of a body moving with constant speed in a circle:

Question # 2

Centripetal acceleration is also called _______ acceleration:

Question # 3

Centripetal acceleration is also called ______ acceleration:

Question # 4

A body can have constant velocity when it follows:

Question # 5

One radian is equal to:

Question # 6

Centripetal acceleration is also called ________ acceleration

Question # 7

A stone is tied to the end of a 20 cm along string is whirled in a horizontal circle.
if centripetal acceleration is 9.8 m/sec2, then its angular velocity in rad/sec is:

Question # 8

A toy car moves around a circular track of radius 0.3 m at the rate of 120 rev/min. The speed V of the car is:

Question # 9

A flywheel accelerates from rest to an angular velocity of 7 rad/sec in 7 seconds. Its average acceleration will be:

Question # 10

A disc rolls down a hill and its speed at bottom is found to be 11.4 m/sec. Height of the hill is then nearly:

Question # 11

A car is moves around a circular track of radius 0.3 m at the rate of 120 rev/min. The speed v of the car is:

Question # 12

A rotating body tends to be slower, when its angular acceleration is:

Question # 13

When a body moves along a circular path with constant speed, it has an acceleration, which is always directed

Question # 14

The number of "Earth Stations" which transmit signals to satellites and receive signals fro them are

Question # 15

When an object moves with a uniform angular velocity, then its instantaneous angular velocity is equal to:

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ECAT Physics Chapter 5 Important MCQ's

Sr.# Question Answer
1 The net force acting on a 100 kg man standing in an elevator accelerating downward with a = 9.8 m sec-2comes out to be
A. 980 N
B. 580 N
C. 1380 N
D. Zero
2 Radian is defined as the angle subtended at the center of a circle by an arc of:
A. Length equal to its diameter
B. Length equal to its radius
C. Any length
D. None of these
3 The useful unit of the angular displacement in SI unit is:
A. Degree
B. Revolution
C. Radian
D. Metre
4 Centripetal force performs:
A. Maximum work
B. Negative work
C. Positive work
D. None of these
5 A disc rolls down a hill and its speed at bottom is found to be 11.4 m/sec. Height of the hill is then nearly:
A. 10 m
B. 12 m
C. 13 m
D. 15 m
6 When angular acceleration is positive, the body rotates:
A. Slower
B. Slowest
C. Faster
D. None of these
7 A body can have constant velocity when it follows:
A. A circular path
B. A rectilinear path
C. Trajectory of a projectile
D. None of these
8 Which one is related to angular motion:
A. Moment of a force
B. Moment of inertia
C. Moment of momentum
D. None of these
9 Formula for calculating moment of inertia of the bodies of one pair is same. Tick the answer.
A. Disc, sphere
B. sphere, hoop
C. Thin rod, hoop
D. Hoop,disc
10 One radian is:
A. Greater than one degree
B. Less than one degree
C. Equal to degree
D. none of these

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