# Gravitation-Gravitational Acceleration (NEET Physics): Questions 5 - 9 of 20

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## Question number: 5

» Gravitation » Gravitational Acceleration

MCQ▾

### Question

Two planets of radii in the ratio 1: 2 are made from the materials of density in the ratio 3: 1. Then the ratio of acceleration due to gravity g 1 /g 2 at the surface of two planets will be

### Choices

Choice (4) Response

a.

b.

c.

d.

1

## Question number: 6

» Gravitation » Gravitational Acceleration

MCQ▾

### Question

On a planet (whose size is the same as that of earth and mass 4 times to the earth) the energy needed to lift a 2 kg mass vertically upwards through 2 m distance on the planet is (g = l0 m/sec 2 on the surface of earth) –

### Choices

Choice (4) Response

a.

160 J

b.

320 J

c.

16 J

d.

32 J

## Question number: 7

» Gravitation » Gravitational Acceleration

Assertion-Reason▾

### Assertion (Ꭺ)

The universal gravitational constant is same as acceleration due to gravity.

### Reason (Ꭱ)

Gravitational constant and acceleration due to gravity have different dimensional formula.

### Choices

Choice (4) Response

a.

Both Ꭺ and Ꭱ are true and Ꭱ is the correct explanation of Ꭺ

b.

Ꭺ is true but Ꭱ is false

c.

Ꭺ is false but Ꭱ is true

d.

Both Ꭺ and Ꭱ are true but Ꭱ is NOT the correct explanation of Ꭺ

## Question number: 8

» Gravitation » Gravitational Acceleration

MCQ▾

### Question

At what height above the earth’s surface the acceleration due to gravity will be of its value at the earth’s surface? Radius of earth is 6400 km

### Choices

Choice (4) Response

a.

25600 km

b.

2228 km

c.

12800 km

d.

2560 km

## Question number: 9

» Gravitation » Gravitational Acceleration

MCQ▾

### Question

If the radius of the earth were to shrink by one percent its mass remaining the same, the acceleration due to gravity on the earth’s surface would -

### Choices

Choice (4) Response

a.

Decrease

b.

Remain unchanged

c.

Increase

d.

Question does not provide sufficient data or is vague

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