# Gravitation-Escape Velocity (NEET (NTA)-National Eligibility cum Entrance Test (Medical) Physics): Questions 1 - 4 of 6

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## Question number: 1

» Gravitation » Escape Velocity

MCQ▾

### Question

The ratio of the radius of the Earth to that of the moon is 10. The ratio of g on earth to the moon is 6. The ratio of the escape velocity from the earth’s surface to that from the moon is approximately –

### Choices

Choice (4) Response

a.

8

b.

2

c.

4

d.

10

## Question number: 2

» Gravitation » Escape Velocity

MCQ▾

### Question

A spaceship is launched into a circular orbit close to earth’s surface. What additional velocity has now to be imparted to the spaceship in the orbit to overcome the gravitational pull? (Radius of earth = 6400 km, g = 9.8 m/sec 2)

### Choices

Choice (4) Response

a.

32.85 m/sec

b.

3.2805 km/sec

c.

7.32 m/sec

d.

11.32 km/sec

## Question number: 3

» Gravitation » Escape Velocity

MCQ▾

### Question

Acceleration due to gravity on a planet is 12 times the value on the earth. Escape velocity for the planet and the earth are V p and V e respectively. The ratio of the radii of the planet and the earth is 2: 1, then –

### Choices

Choice (4) Response

a.

b.

c.

d.

## Question number: 4

» Gravitation » Escape Velocity

MCQ▾

### Question

Gas escapes from the surface of a planet because it acquires an escape velocity. The escape velocity will depend on which of the following factors:

(1) Mass of the planet

(3) Mass of the particle escaping

(4) Temperature of the planet

Select the correct answers with mark it according to the following codes:

### Choices

Choice (4) Response

a.

1.2 and 3 are correct

b.

1 and 2 are correct

c.

1 and 3 are correct

d.

1 and 4 are correct

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