NEET Physics: Questions 1530 - 1535 of 2098

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Question number: 1530

» Thermodynamics » Concept of Temperature

MCQ▾

Question

If 300 ml of gas at 17°C is cooled to 7°C at constant pressure, then its final volume will be,

Choices

Choice (4) Response

a.

540.23 ml

b.

289.65 ml

c.

135.35 ml

d.

280.45 ml

Question number: 1531

» Kinetic Theory of Gases » Work Done on Compressing a Gas

MCQ▾

Question

1 7 calories of heat are required to raise the temperature 2 moles of an ideal gas at constant pressure from 30°C to 35°C The amount of heat required to rise the temperature of same gas through the same range (30° C to 35° C) at constant volume (R = 2 Cal/mole K)

Choices

Choice (4) Response

a.

70 Cal

b.

450 Cal

c.

50 Cal

d.

30 Cal

Question number: 1532

» Thermodynamics » Concept of Temperature

MCQ▾

Question

Efficiency of a Carnot engine is 50 % when temperature of outlet is 500 K. In order to increase efficiency up to 60 % keeping temperature of intake the same what will be temperature of outlet

Choices

Choice (4) Response

a.

200 K

b.

600 K

c.

800 K

d.

400 K

Question number: 1533

» Kinetic Theory of Gases » Equation of State of a Perfect Gas

MCQ▾

Question

Gas at a pressure P 0 is contained in a vessel. If the mass of all the molecules are halved and their speeds an doubled, the resulting pressure p will be equal to

Choices

Choice (4) Response

a.

P02

b.

4P0

c.

2P0

d.

P0

Question number: 1534

» Atoms and Nuclei » Mass-Energy Relation

MCQ▾

Question

Energy of each photon obtained in the pair production process will be, if the mass of electron or positron is 12000 a. m. u-

Choices

Choice (4) Response

a.

0.213 MeV

b.

0.465 MeV

c.

0.123 MeV

d.

0.321 MeV

Question number: 1535

» Atoms and Nuclei » Radioactive Decay Law

MCQ▾

Question

Half-life of Bi 210 is 5 days. If we start with 50, 000 atoms of this isotope, the number of atoms left over after 10 days is

Choices

Choice (4) Response

a.

5, 000

b.

25, 000

c.

20, 000

d.

12, 500

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