# AIIMS (All India Institute of Medical Sciences) Physics: Questions 386 - 391 of 500

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## Question number: 386

MCQ▾

### Question

If the radius of a planet is R and density of same planet is , another planet having radius and density and respectively; then the ratio of accelerations due to gravity of these both planet is –

### Choices

Choice (4) Response

a.

b.

c.

4

d.

6

## Question number: 387

MCQ▾

### Question

How far will a body free – fall in 2 second if released from rest?

### Choices

Choice (4) Response

a.

0.0 m

b.

4.9 m

c.

9.8 m

d.

19.6 m

## Question number: 388

MCQ▾

### Question

A solid sphere of diameter D and density has a spherical cavity of diameter inside it. If it just floats completely immersed in a liquid of density, then the ratio is –

### Choices

Choice (4) Response

a.

b.

c.

d.

## Question number: 389

MCQ▾

### Question

Find the magnitude of pressure amplitude in a sound of intensity. Density of air at STP .

### Choices

Choice (4) Response

a.

b.

c.

d.

## Question number: 390

» Kinematics » Scalars and Vectors » Scalar and Vector Products

MCQ▾

### Question

The vector and are perpendicular to each other. The positive value of is:

### Choices

Choice (4) Response

a.

3

b.

5

c.

10

d.

6

## Question number: 391

MCQ▾

### Question

A body dropped from a height with an initial speed zero, strikes the ground with a velocity. Another body of same mass is dropped from the same height ‘h’ with an initial speed . Find the final velocity of second body, with which it strikes the ground.

### Choices

Choice (4) Response

a.

b.

c.

d.

f Page