NEET (NTA)-National Eligibility cum Entrance Test (Medical) Physics: Questions 1371 - 1375 of 2184

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Question number: 1371

» Properties of Solids & Liquids » Thermal Expansion

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MCQ▾

Question

The coefficient of apparent expansion of mercury in a glass vessel is 153 × 10 -6 /°C and in a steel vessel is 144 × 10 -6 / 0 C. If a for steel is 18 × 10 -6 / 0 C, then that of glass is

Choices

Choice (4) Response

a.

b.

c.

d.

Question number: 1372

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

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Question

In a surface tension experiment with a capillary tube water rises up to 0.1 m . If the same experiment is repeated on an artificial satellite, which is revolving around the earth, water will rise in the capillary tube up to heights of,

Choices

Choice (4) Response

a.

0.98 m

b.

0.1 m

c.

Full length of the capillary tube

d.

0.2 m

Question number: 1373

» Thermodynamics » Thermal Equilibrium

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Question

When heat is given to a gas in an isothermal change, the result will be

Choices

Choice (4) Response

a.

External work done

b.

Increase in internal energy

c.

External work done and aso rise in temp.

d.

Rise in temperature

Question number: 1374

» Wave Optics » Polarization

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Question

When an unpolarised light of intensity I 0 is incident on a polarizing sheet, the intensity of the light which does not get transmitted is

Choices

Choice (4) Response

a.

b.

Zero.

c.

d.

Question number: 1375

» Properties of Solids & Liquids » Latent Heat

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Question

A stationary object at 4°C and weighing 5.5 kg falls from a height of 6000 m on a snow mountain at 0°C. If the temperature of the object just before hitting the snow is 0°C and the object comes to rest immediately? (g = 10m/s 2 and latent heat of ice = 3.5 × 10 5 joule/sec), then the object will melt

Choices

Choice (4) Response

a.

2 kg of ice

b.

200 kg of ice

c.

0.9438 kg of ice

d.

2.346 gm of ice