NEET (NTA)-National Eligibility cum Entrance Test (Medical) Physics: Questions 1525 - 1528 of 2142

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Question number: 1525

» Kinetic Theory of Gases » Kinetic Energy and Temperature

MCQ▾

Question

Which of the following statements is true?

Choices

Choice (4) Response

a.

The root mean square speed of the molecules of different ideal gases, maintained at the same temperature are the same

b.

Given sample of 1 cc of hydrogen and 1 cc of oxygen both at NTP; oxygen sample has a large number of molecules

c.

Two different gases at the same temperature and pressure have equal root mean square velocities.

d.

Absolute zero temperature is not zero energy temperature

Question number: 1526

» Atoms and Nuclei » Radioactive Decay Law

MCQ▾

Question

The half-life of radioactive Radon is 3.8 days. The time at the end of which of the Radon sample will remain undecayedis

(Given log 10 e = 0.4343)

Choices

Choice (4) Response

a.

33 days

b.

3.8 days

c.

76 days

d.

16.5 days

Question number: 1527

» Kinetic Theory of Gases » Kinetic Energy and Temperature

MCQ▾

Question

In the two vessels of same volume, atomic hydrogen and helium at pressure 1 atm and 2 atm are filled. If temperature of both the samples is same, then average speed of hydrogen atoms < C H > will be related to that of helium < C He > as,

Choices

Choice (4) Response

a.

b.

c.

d.

Question number: 1528

» Thermodynamics » Concept of Temperature

MCQ▾

Question

One mole of a perfect gas in a cylinder fitted with a piston has a pressure P . volume V and temperature T. If the temperature is increased by 2 K keeping pressure constant, the increase in volume is

Choices

Choice (4) Response

a.

b.

c.

d.

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