# NSTSE (National Science Talent Search Exam- Unified Council) Class 9: Questions 1276 - 1282 of 2000

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## Question number: 1276

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MCQ▾

### Question

The kinetic energy in terms of the momentum is given as:

### Choices

Choice (4)Response

a.

b.

c.

d.

None of the above

## Question number: 1277

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MCQ▾

### Question

If a freely falling body travels a distance in the last second, equal to the distance travelled by in the first 2 seconds, the approximate time of its travel is:

### Choices

Choice (4)Response

a.

b.

c.

d.

## Question number: 1278

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MCQ▾

### Question

The weight of an object of mass is:

### Choices

Choice (4)Response

a.

b.

c.

d.

## Question number: 1279

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MCQ▾

### Question

If speed of sound in air is and an echo is heard in after the emission of sound, then the distance of the reflecting surface from the source is:

### Choices

Choice (4)Response

a.

b.

c.

d.

## Question number: 1280

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MCQ▾

### Question

Calculate the height, at where weight of a body becomes of weight, when it is on the surface of earth. The radius of earth is .

### Choices

Choice (4)Response

a.

b.

c.

r

d.

## Question number: 1281

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MCQ▾

### Question

If an object floats with of its volume inside the water and of its volume inside the liquid, then the relative density of the liquid is:

### Choices

Choice (4)Response

a.

3

b.

2

c.

d.

## Question number: 1282

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MCQ▾

### Question

A force of is distributed uniformly on one face of a cube of edge . The pressure on this surface is approximately:

### Choices

Choice (4)Response

a.

b.

c.

d.

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