# NSTSE (National Science Talent Search Exam- Unified Council) Class 8: Questions 1580 - 1587 of 2028

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## Question number: 1580

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MCQ▾

### Question

An object oscillates times in , therefore its frequency is:

### Choices

Choice (4) Response

a.

b.

c.

d.

## Question number: 1581

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MCQ▾

### Question

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

### Choices

Choice (4) Response

a.

Lungs

b.

Wind pipe

c.

Larynx

d.

Vocal chords

## Question number: 1582

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MCQ▾

### Question

Due to presence of which of the following, one can suck juice from straw.

### Choices

Choice (4) Response

a.

Pressure of liquid

b.

Smaller cross section area of straw

c.

Atmospheric Pressure

d.

Gravitational force

## Question number: 1583

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MCQ▾

### Question

The value of speed of sound is least in:

### Choices

Choice (4) Response

a.

Air

b.

Water

c.

Steel

d.

All of the above

## Question number: 1584

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MCQ▾

### Question

Two blocks A and B are kept in contact and both are relatively in motion. If block A is heavier then block B, then friction acts on:

### Choices

Choice (4) Response

a.

Neither on block A nor block B

b.

Block B

c.

Block A and Block B

d.

Block A

## Question number: 1585

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MCQ▾

### Question

If we are decreasing the stretching force on a wire in a guitar, its frequency:

### Choices

Choice (4) Response

a.

becomes zero

b.

increases

c.

remains same

d.

decreases

## Question number: 1586

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MCQ▾

### Question

Which characteristic of sound is useful to determine Pitch of sound?

### Choices

Choice (4) Response

a.

Loudness

b.

Frequency

c.

Speed

d.

Amplitude

## Question number: 1587

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MCQ▾

### Question

If a tip of drawing pen of area , exerted pressure on a drawing paper, then force applied on the surface of drawing paper is:

### Choices

Choice (4) Response

a.

b.

c.

d.

Developed by: