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

When angular acceleration is positive, the body rotates:

Question # 2

Circular motion is an example of motion in:

Question # 3

Which one is related to angular motion:

Question # 4

Which of the following pairs does not have identical dimensions?

Question # 5

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

Question # 6

The useful unit of angular replacement in SI unit is:

Question # 7

A body moving along the circumference of a circle of radius R completes one revolution. The radius of the covered path to the angle subtended at the center is:

Question # 8

One radian is equal to:

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

______ plays the same role during angular motion as played by the mass in linear motion

Question # 11

Direction of angular momentum is determined by:

Question # 12

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 # 13

Direction of motion _______ in circular motion

Question # 14

A car is turning around a corner at 10 m/sec as it travels along an arc of circle. If value of centripetal acceleration is 10 m/sec2in this case, find radius of the circular path:

Question # 15

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

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ECAT Physics Chapter 5 Important MCQ's

Sr.# Question Answer
1 Centripetal force performs:
A. Maximum work
B. Negative work
C. Positive work
D. None of these
2 One radian is:
A. Greater than one degree
B. Less than one degree
C. Equal to one degree
D. None of them
3 A body moving along the circumference of a circle of radius R completes one revolution. The radius of the covered path to the angle subtended at the center is:
A. Radius of the circle
B. Twice the radius
C. Thrice the radius
D. None of these
4 In case of planets, the necessary acceleration is provided by:
A. Gravitational force
B. Coulomb force
C. Frictional force
D. None of these
5 The net force acting on a 100 kg man standing in an elevator accelerating downward with a = 0.8 m sec-2comes out to:
A. 980 N
B. 580 N
C. 1380 N
D. Zero
6 A rotating body tends to be slower, when its angular acceleration is:
A. Positive
B. Negative
C. Zero
D. Infinity
7 INTELSAT operates at frequencies 4, 6, 11, 14 having unit of:
A. KHz
B. MHz
C. GHz
D. BHz
8 Centripetal acceleration is also called ______ acceleration
A. Tangential
B. Radial
C. Angular
D. None of them
9 A body moving along the circumference of a circle of radius R completes one revolution. The radius of a covered path to the angle subtended at the centre is:
A. Radius of the circle
B. Twice the radius
C. Thrice the radius
D. None of these
10 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

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