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Worksheets

OSCILLATIONS

Total questions: 10

Worksheet time: 5mins

Name
Class
Date
1.

Assertion: Acceleration is proportional to the displacement. This condition is not sufficient for motion in simple harmonic.

Reason: In simple harmonic motion direction of displacement is also considered.

a)

Both assertion and reason are true and the reason is the correct explanation of the assertion.

b)

Both assertion and reason are true but reason is not the correct explanation of the assertion.

c)

Assertion is true but reason is false.

d)

Assertion and reason both are false.

2.

Assertion: Sine and cosine functions are periodic functions.

Reason: Sinusoidal functions repeat it values after a definite interval of time.

a)

Both assertion and reason are true and the reason is the correct explanation of the assertion.

b)

Both assertion and reason are true but reason is not the correct explanation of the assertion.

c)

Assertion is true but reason is false.

d)

Assertion and reason both are false.

3.

Assertion: The periodic time of a hard spring is more as compared to that of a soft spring.

Reason: The periodic time depends upon the spring constant, and spring constant is large for hard spring.

a)

Both assertion and reason are true and the reason is the correct explanation of the assertion.

b)

Both assertion and reason are true but reason is not the correct explanation of the assertion.

c)

Assertion is false but reason is true.

d)

Assertion and reason both are false.

4.

The maximum speed of a particle executing S.H.M. is 1m/s and its maximum acceleration is 1.57m/sec2. The time period of the particle will be:

a)

1.57 sec

b)

2 sec

c)

4 sec

d)

3.14 sec

5.

To make the frequency double of an oscillator, we have to:

a)

Double the mass

b)

Half the mass

c)

Quadruple the mass

d)

Reduce the mass to one-fourth

6.

The phase of a particle executing simple harmonic motion is π/2 when it has:

a)

Maximum velocity

b)

Maximum energy

c)

Maximum displacement

d)

None of these

7.

The equation of S.H.M. is y = a sin (2πnt + α), then its phase at time t is:

a)

2πnt

b)

α

c)

2πnt+α

d)

2πt

8.

A particle is moving in a circle with uniform speed. Its motion is:

a)

Periodic and simple harmonic

b)

Periodic but not simple harmonic

c)

Simple harmonic

d)

None of these

9.

A system exhibiting S.H.M. must possess:

a)

Inertia only

b)

Elasticity as well as inertia

c)

Elasticity only

d)

None of these

10.

A particle is executing S.H.M. if its amplitude is 2 m and periodic time 2 seconds. Then the maximum velocity of the particle will be:

a)

b)

c)

d)

π