# Physics-Sound [NSTSE (National Science Talent Search Exam- Unified Council) Class 8]: Questions 1 - 9 of 31

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## Question 1

Sound

### Question

MCQ▾

Sound is form of:

### Choices

Choice (4)Response

a.

Energy

b.

Force

c.

Velocity

d.

Momentum

## Question 2

Sound

### Question

MCQ▾

A source of sound is producing oscillations in . Then its frequency (in Hz) of is:

### Choices

Choice (4)Response

a.

b.

c.

d.

## Question 3

Sound

### Question

MCQ▾

The time taken by the an object to travel one oscillation is called?

### Choices

Choice (4)Response

a.

Amplitude

b.

Time period

c.

Acceleration

d.

Frequency

## Question 4

Sound

### Question

MCQ▾

A source is produced oscillations in . Therefore, its frequency is:

### Choices

Choice (4)Response

a.

b.

c.

d.

## Question 5

Sound

### Question

MCQ▾

Which of the following does not produced noise pollution?

### Choices

Choice (4)Response

a.

Bomb blast

b.

Loud speaker.

c.

Television

d.

Horn of vehicle

## Question 6

Sound

### Question

MCQ▾

If frequency of a sound wave is , then number of oscillations in is:

### Choices

Choice (4)Response

a.

9000

b.

18000

c.

150

d.

90

## Question 7

Sound

### Question

MCQ▾

The unit of loudness is:

### Choices

Choice (4)Response

a.

decibel

b.

Second

c.

d.

meter

## Question 8

Sound

### Question

MCQ▾

An object oscillates times in , therefore its frequency is:

### Choices

Choice (4)Response

a.

b.

c.

d.

## Question 9

Sound

### Question

MCQ▾

The voices of male and female are different, because of:

### Choices

Choice (4)Response

a.

Lungs

b.

Wind pipe

c.

Larynx

d.

Vocal chords

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