# Gravitation (NEET (NTA)-National Eligibility cum Entrance Test (Medical) Physics): Questions 1 - 6 of 85

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## Question number: 1

» Gravitation » Kepler's Laws of Planetary Motion

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MCQ▾

### Question

The mean distance of mars from sun is 1.524 times the distance of the earth from the sun. The period of revolution of mars around sun will be

### Choices

Choice (4) Response

a.

2.88 earth year

b.

4.88 earth year

c.

3.88 earth year

d.

1.88 earth year

## Question number: 2

» Gravitation » Energy

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MCQ▾

### Question

A projectile is fired vertically upward from the surface of earth with a velocity . where is the escape velocity and K < 1. Neglecting air resistance, the maximum height to which it will rise measured from the center of the earth is - (where R = radius of earth)

### Choices

Choice (4) Response

a.

b.

c.

d.

## Question number: 3

» Gravitation » Gravitational Acceleration

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MCQ▾

### Question

Two planets of radii in the ratio 2: 3 are made from the materials of density in the ratio 3: 2. Then the ratio of acceleration due to gravity at the surface of two planets will be,

### Choices

Choice (4) Response

a.

2.25

b.

c.

0.12

d.

1

## Question number: 4

» Gravitation » Energy

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MCQ▾

### Question

A body of mass 100 kg falls on the earth from infinity. What will be its energy on reaching the earth? Radius of the earth is 6400 km and g = 9.8 m/s 2. Air friction is negligible.

### Choices

Choice (4) Response

a.

6.27 ⨯ 10 9 J

b.

6.27 ⨯ 10 8 J

c.

6.27 ⨯ 10 10 J

d.

6.27 ⨯ 10 7 J

## Question number: 5

» Gravitation » Universal Law of Gravitation

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MCQ▾

### Question

A satellite of mass m is revolving in a circular orbit of radius r. The relation between the angular momentum J of satellite and mass m of earth will be –

### Choices

Choice (4) Response

a.

b.

c.

d.

## Question number: 6

» Gravitation » Universal Law of Gravitation

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MCQ▾

### Question

If a graph is plotted between T 2 and r 3 for a planet then its slope will be –

### Choices

Choice (4) Response

a.

b.

0

c.

d.

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