NEET (NTA)-National Eligibility cum Entrance Test (Medical) Physics: Questions 1165 - 1168 of 2184

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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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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.

Question number: 1167

» Properties of Solids & Liquids » Thermal Expansion

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MCQ▾

Question

The real coefficient of volume expansion of glycerin is 0.000597 per °C and linear coefficient of expansion of glass is 0.000009 per °C. Then the apparent volume coefficient of expansion of glycerin is

Choices

Choice (4) Response

a.

0.000558 per °C

b.

0.00057 per °C

c.

0.00066 per °C

d.

0.00027 per °C

Question number: 1168

» Wave Optics » Polarization

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Question

Unpolarised light of intensity 32 Wm -2 passes through three polarizers such that the transmission axis of the last polarizer is crossed with the first. If the intensity of the emerging light is 3 Wm -2, at what angle will the transmitted intensity be maximum?

Choices

Choice (4) Response

a.

35°

b.

15°

c.

45°

d.

75°