NEET (NTA)-National Eligibility cum Entrance Test (Medical) Physics: Questions 1163 - 1166 of 2320

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Question number: 1163

» Properties of Solids & Liquids » Surface Energy and Surface Tension

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MCQ▾

Question

Two parallel glass plates are dipped partly in the liquid of density ρ keeping them vertical. If the distance between the plates is V, surface tension for liquids is T and angle of contact is θ, then rise of liquid between the plates due to capillary will be

Choices

Choice (4)Response

a.

b.

c.

d.

Question number: 1164

» Wave Optics » Polarization

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Assertion-Reason▾

Question

Assertion (Ꭺ)

A Nicol prism can produce polarised light. It can also analyses plane polarised light.

Reason (Ꭱ)

Nicol prism reduces the intensity of light to zero.

Choices

Choice (4)Response

a.

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

b.

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

c.

Both Ꭺ and Ꭱ are false

d.

Ꭺ is true but Ꭱ is false

Question number: 1165

» Properties of Solids & Liquids » Thermal Expansion

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MCQ▾

Question

A piece of metal weight 40 gm in air, when it is immersed in the liquid of specific gravity 1.24 at 27 °C it weighs 25 gm. When the temperature of liquid is raised to 42°C the metal piece weighs 20gm, specific gravity of the liquid at 42°C is 1.20, then the linear expansion of the metal will be

Choices

Choice (4)Response

a.

2.6 × 10 -3 / o C

b.

3.316 × 10 -2 /°C

c.

8.3 × 10 -3 /°C

d.

All of the above

Question number: 1166

» Properties of Solids & Liquids » Terminal Velocity

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MCQ▾

Question

A large open tank has two holes in the wall. One is a square hole of side L at a depth y from the top and the other is a circular hole of radius if at a depth 5y from the top. When the tank is completely filled with water the quantities of water flowing out per second from both the holes are the same. Then R is equal to

Choices

Choice (4)Response

a.

b.

c.

d.

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