NEET (NTA)-National Eligibility cum Entrance Test (Medical) Physics: Questions 1160 - 1163 of 2320

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Question number: 1160

» Properties of Solids & Liquids » Elastic Behavior

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MCQ▾

Question

The lengths and radii of two wires of same material are respectively L, 3L, and 3R, R. Equal weights are applied on then. If the elongations produced in them are l 1 and l 2 respectively then their ratio will be

Choices

Choice (4)Response

a.

1: 18

b.

1: 8

c.

2: 1

d.

8: 1

Question number: 1161

» Properties of Solids & Liquids » Elastic Behavior

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Question

Length of a wire is doubled, when 15 × 10 8 N/m 2 stress is applied on it. Its Young’s modulus of elasticity in N/m 2 will be

Choices

Choice (4)Response

a.

15 × 10 8

b.

10 × 10 8

c.

20 × 10 8

d.

25 × 10 10

Question number: 1162

» Properties of Solids & Liquids » Thermal Expansion

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Question

A piece of metal weight 46 gm in air, when it is immersed in the liquid of specific gravity 1.24 at 27 °C it weighs 30 gm. When the temperature of liquid is raised to 42°C the metal piece weighs 30.5 gm, 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.

4.316 × 10 -5 /°C

b.

3.316 × 10 -5 /°C

c.

2.316 × 10 -5 / o C

d.

None of the above

Question number: 1163

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

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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.

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