# NEET (NTA)-National Eligibility cum Entrance Test (Medical) Physics: Questions 1326 - 1331 of 2320

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## Question number: 1326

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MCQ▾

### Question

In Young’s experiment the wavelength of red light is 7.5 × 10 -5 cm. and that of blue light 5.0 × 10 -5 cm. The value of n for which (n + l) th blue bright band coincides with n th red bright band is-

### Choices

Choice (4)Response

a.

1

b.

4

c.

2

d.

8

## Passage

In a thermally insulated tube of cross sectional area 4 cm 2 a liquid of thermal expansion coefficient 10 - 3 K - 1 is flowing. Its velocity at the entrance is 0.1 m/s. At the middle of the tube a heater of a power of 10 kW is heating the liquid. The specific heat capacity of the liquid is 1.5 kJ/ (kg K), and its density is 1500 kg/m 3 at the entrance.

## Question number: 1327 (1 of 3 Based on Passage) Show Passage

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MCQ▾

### Question

What is the density of liquid at the exit?

### Choices

Choice (4)Response

a.

b.

c.

d.

All of the above

## Question number: 1328 (2 of 3 Based on Passage) Show Passage

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MCQ▾

### Question

The rise in temperature of the liquid as it pass through the tube is

### Choices

Choice (4)Response

a.

b.

c.

d.

Question does not provide sufficient data or is vague

## Question number: 1329 (3 of 3 Based on Passage) Show Passage

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MCQ▾

### Question

How much bigger is the volume rate of flow at the end of the tube than at the entrance in cubic meters?

### Choices

Choice (4)Response

a.

b.

c.

d.

None of the above

## Question number: 1330

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MCQ▾

### Question

A viscous fluid is flowing through a cylindrical tube. The velocity distribution of the fluid is best represented by the diagram

### Choices

Choice (4)Response

a.

b.

c.

d.

All of the above

## Question number: 1331

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MCQ▾

### Question

The intensities of two light sources are I and 9I respectively. If the phase difference between the waves emitted by them is π then the resultant intensity at the point of observation will be –

### Choices

Choice (4)Response

a.

3I

b.

4I

c.

82I

d.

10I

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