NEET (NTA)-National Eligibility cum Entrance Test (Medical) Physics: Questions 1524 - 1528 of 2184

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Question number: 1524

» Thermodynamics » Thermal Equilibrium

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MCQ▾

Question

A gas mixture consists of 4 moles of oxygen and 10 moles argon at temperature T neglecting all vibrational modes, the total internal energy of the system is

Choices

Choice (4) Response

a.

11 RT

b.

15 RT

c.

25 RT

d.

29 RT

Question number: 1525

» Thermodynamics » Laws of Thermodynamics » First Law of Thermodynamics

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MCQ▾

Question

In changing the state of thermodynamics from A to B state, dg heat required is Q and the work done by the system is W. Tae change in its internal energy is

Choices

Choice (4) Response

a.

b.

c.

d.

Question number: 1526

» Kinetic Theory of Gases » Kinetic Energy and Temperature

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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.

Absolute zero temperature is not zero energy temperature

c.

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

d.

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

Question number: 1527

» Atoms and Nuclei » Radioactive Decay Law

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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.

16.5 days

b.

33 days

c.

76 days

d.

3.8 days

Question number: 1528

» Kinetic Theory of Gases » Kinetic Energy and Temperature

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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.