NEET (NTA)-National Eligibility cum Entrance Test (Medical) Physics: Questions 1483 - 1488 of 2184

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Question number: 1483

» Atoms and Nuclei » Nuclear Fission and Fusion

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MCQ▾

Question

Power output of 92 U 235 reactor if it takes 30 days to use up 2 kg of fuel, and if each fission gives 185 MeV of useable energy is-

Choices

Choice (4) Response

a.

5.846 kW

b.

58.46 MW

c.

0.5846 kW

d.

All of the above

Question number: 1484

» Thermodynamics » Concept of Temperature

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MCQ▾

Question

Efficiency of a Carnot engine is 50 % when temperature of outlet is 400 K. In order to increase efficiency up to 70 % keeping temperature of intake the same what will be temperature of outlet

Choices

Choice (4) Response

a.

870 K

b.

460 K

c.

690 K

d.

240 K

Question number: 1485

» Kinetic Theory of Gases » Kinetic Energy and Temperature

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MCQ▾

Question

At which of the following temperature would the molecule of a gas have triple the average kinetic energy they have at 20°C?

Choices

Choice (4) Response

a.

40° C

b.

80° C

c.

606° C

d.

313°C

Question number: 1486

» Kinetic Theory of Gases » Kinetic Energy and Temperature

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MCQ▾

Question

The kinetic energy of one gram molecule of a gas at normal temperature and pressure is (R = 8.31 J/mole - K)

Choices

Choice (4) Response

a.

0.56 ⨯ 10 4 J

b.

1.3 ⨯ 10 2 J

c.

3.4 ⨯ 10 3 J

d.

2.7 ⨯ l0 2 J

Question number: 1487

» Atoms and Nuclei » Radioactivity

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MCQ▾

Question

Which of the following are modes of radioactive decay?

(1) Positron emission (2) Electron capture

(3) α -decay (4) Fusion

Select the correct answers and mark it according to the following codes:

Choices

Choice (4) Response

a.

1 and 3 are correct

b.

2 and 4 are correct

c.

1 and 2 are correct

d.

1,2 and 3 are correct

Question number: 1488

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

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MCQ▾

Question

One mole of ideal monoatomic gas is mixed with one mole of diatomic gas . What is γ mix for

Choices

Choice (4) Response

a.

b.

c.

d.