# NSTSE (National Science Talent Search Exam- Unified Council) Class 9: Questions 1360 - 1365 of 2000

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## Question number: 1360

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MCQ▾

### Question

Calculate escape velocity from the planet having twice the radius and same mean density. The escape velocity from the earth is about .

### Choices

Choice (4) Response

a.

b.

c.

d.

## Question number: 1361

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MCQ▾

### Question

A truck from rest and rolls down a hill with a constant acceleration. It travels a distance of in . Find the force acting on it if its mass is metric tons:

(Hint: metric tone ).

### Choices

Choice (4) Response

a.

b.

c.

d.

## Question number: 1362

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MCQ▾

### Question

The change in linear momentum by the force is equal to:

### Choices

Choice (4) Response

a.

Acceleration due to force

b.

Velocity due to force

c.

Impulse of force

d.

Question does not provide sufficient data or is vague

## Question number: 1363

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MCQ▾

### Question

A sound wave is has time period in a medium is . At a given instant a particular region in the medium has minimum density. The density of this region will be minimum again at:

### Choices

Choice (4) Response

a.

b.

c.

d.

## Question number: 1364

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MCQ▾

### Question

True coelom is present in which phylum

### Choices

Choice (4) Response

a.

Annelida

b.

Nemathelminthes

c.

Platyhelminthes

d.

All of the above

## Question number: 1365

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MCQ▾

### Question

Two bikes starting from rest accelerate uniformly. The second bike travels four times faster than the first bike. Then the ratio of the distance covered in time is –

### Choices

Choice (4) Response

a.

b.

c.

d.

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