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

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Question number: 1326

» Wave Optics » Young's Double Slit Experiment

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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

Read the passage given below and answer the questions that follows:

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

» Properties of Solids & Liquids » Thermal Expansion

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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

» Properties of Solids & Liquids » Thermal Expansion

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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

» Properties of Solids & Liquids » Thermal Expansion

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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

» Properties of Solids & Liquids » Viscosity

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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.

Viscous fluid is flowing through a cylindrical tube – Choice A

Viscous Fluid is Flowing through a Cylindrical Tube – Choice A

b.

Viscous fluid is flowing through a cylindrical tube – Choice B

Viscous Fluid is Flowing through a Cylindrical Tube – Choice B

c.

Viscous fluid is flowing through a cylindrical tube – Choice C

Viscous Fluid is Flowing through a Cylindrical Tube – Choice C

d.

All of the above

Question number: 1331

» Wave Optics » Interference

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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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