ECAT Pre Computer Science Chapter 7 MCQ Test With Answer

MCQ's Test For ECAT Physics Chapter 7 Oscillations

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ECAT Physics Chapter 7 Oscillations

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Question # 1

If time period of a pendulum is doubled by increasing its length, then its frequency will

Question # 2

Which of the following is an example of SHM(in ideal situations)

Question # 3

An angle of 180° in circular motion is equivalent to ______ in SHM.

Question # 4

Acceleration of body executing SHM is always directed towards

Question # 5

Velocity of particle executing SHM will be maximum at

Question # 6

If a force of 0.05 N produces an elongation of 20 mm in string, then its spring constant will be:

Question # 7

The S.I unit of frequency is

Question # 8

The string of a simple pendulum should be:

Question # 9

The maximum distance of body from mean position when body is executing SHM is called

Question # 10

The wave form of SHM is

Question # 11

The number of vibrations in two seconds can be expressed as______if frequency of vibration is f.

Question # 12

The displacement of body executing SHM is

Question # 13

To and fro motion of a body is about its mean position is known as:

Question # 14

A particle is moving along a circular path with uniform speed. Its projection will execute ___along the _____ of the circle:

Question # 15

The time taken to complete one vibration is called:

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ECAT Physics Chapter 7 Important MCQ's

Sr.# Question Answer
1 The string of a simple pendulum should be:
A. Heavy
B. Extensible
C. In-extensible
D. None of these
2 The restoring force is ______ amd opposite to the applied force within _____:
A. Equal, elastic limit
B. Different, the walls of the laboratory
C. Different, elastic limit
D. None of these
3 Second's pendulum is the pendulum whose time period is:
A. 1 second
B. 2 second
C. 3 second
D. None of these
4 Which of the following forces is responsible for SHM
A. Applied force
B. Restoring force
C. Fractional force
D. Elastic force
5 The displacement of body executing SHM is
A. xocoswt
B. xosinwt
C. xosin2wt
D. Both A, B
6 A spring of constant k = 0.4 N m-1is to be extended thorugh 10 cm at a place where g = 10 m sec-2. The mass to be suspended should be:
A. 4 gms
B. 0.4 gms
C. 40 gms
D. None of these
7 In SHM, there is always a constant ratio between displacement if body and its:
A. Velocity
B. Period
C. Mass
D. Acceleration
8 An object in SHM will have maximum speed when its displacement from equilibrium position is:
A. Infinity
B. Maximum
C. Zero
D. Minimum
9 Which one of the following is an example of SHM:
A. Motion in a plane
B. Motion in a swing
C. Motion in a car
D. None of these
10 If mass of 10 gm is suspended from a spring of K=0.8 Nm-1then the extension will be:
A. 10 cm
B. 1 m
C. 10 mn
D. None of these

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