NEET Physics: Questions 1164 - 1167 of 2098

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Question number: 1164

» Properties of Solids & Liquids » Thermal Expansion

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.

8.3 × 10 -3 /°C

c.

3.316 × 10 -2 /°C

d.

Question does not provide sufficient data or is vague

Question number: 1165

» Properties of Solids & Liquids » Terminal Velocity

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.

L

b.

L2π

c.

L2.23π

d.

2πL

Question number: 1166

» Properties of Solids & Liquids » Thermal Expansion

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.

0.00027 per °C

b.

0.00057 per °C

c.

0.000558 per °C

d.

0.00066 per °C

Question number: 1167

» Wave Optics » Polarization

MCQ▾

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.

15°

b.

75°

c.

35°

d.

45°

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