NEET (NTA)-National Eligibility cum Entrance Test (Medical) Physics: Questions 1167 - 1171 of 2320

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Question number: 1167

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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

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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°

Question number: 1169

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Question

A photon and an electron have equal energy E. is proportional to

Choices

Choice (4)Response

a.

b.

Not depend upon E

c.

d.

Question number: 1170

» Thermodynamics » Laws of Thermodynamics » First Law of Thermodynamics

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Question

The latent heat of vaporization of water is 2240 J/gm. If the work done in the process of expansion of 1 g of water is 168 J, then increase in internal energy is

Choices

Choice (4)Response

a.

2072 J

b.

2408 J

c.

2240 J

d.

1904 J

Question number: 1171

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Question

2 kg of ice at - 20°C is mixed with 5 kg of water at 20°C in an insulating vessel having a negligible heat capacity. Calculate the final mass of water remaining in the container. It is given that the specific heats of water and ice are 1 kcal/kg /°C and 0.5 kcal/kg /°C while the latent heat of fusion of ice is 80 kcal/kg

Choices

Choice (4)Response

a.

7 kg

b.

2kg

c.

6 kg

d.

4 kg

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