# NEET (NTA)-National Eligibility cum Entrance Test (Medical) Physics: Questions 1432 - 1436 of 2184

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## Question number: 1432

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MCQ▾

### Question

When a body falls in air, the resistance of air depends to a rate extent on the shape of the body, 3 different shapes disc, ball and cigar shape. Identify the combination of air resistances which truly represents the physical situation. (The cross sectional areas are the same).

### Choices

Choice (4) Response

a.

2 < 3 < 1

b.

3 < 1 < 2

c.

1 < 2 < 3

d.

3 < 2 < 1

## Question number: 1433

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MCQ▾

### Question

A copper rod 2m long is stretched by 1mm. Strain will be -

### Choices

Choice (4) Response

a.

5 × 10 -4, longitudinal

b.

10 -4, volumetric

c.

5 × 10 -3, volumetric

d.

5 × 10 -4, volumetric

## Question number: 1434

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MCQ▾

### Question

When the light source is moving towards the observer,

### Choices

Choice (4) Response

a.

The wavelength of light decreases

b.

The wavelength of light remains same

c.

The wavelength of light increases

d.

The velocity of light increases

## Question number: 1435

» Properties of Solids & Liquids » Heat Transfer » Conduction

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MCQ▾

### Question

A 10 cm thick ice block is there on the surface of water in a lake. The temperature of air is - 10° C; how much time it will take to double the thickness of the block (L = 80 cal/g, K ice = 0.004 erg/s-k, ρ ice = 0.92 gm cm -3)

### Choices

Choice (4) Response

a.

191 hours

b.

19.11 hours

c.

21 hour

d.

51.11 hours

## Question number: 1436

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Assertion-Reason▾

### Assertion (Ꭺ)

Bohr postulated that the electrons in stationary orbits around the nucleus do not radiate energy.

### Reason (Ꭱ)

According to classical physics all moving electrons radiate energy.

### Choices

Choice (4) Response

a.

Ꭺ is false but Ꭱ is true

b.

Ꭺ is true but Ꭱ is false

c.

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

d.

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