NEET (NTA)-National Eligibility cum Entrance Test (Medical) Physics: Questions 1557 - 1561 of 2320

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Question number: 1557

» Atoms and Nuclei » Mass Defect

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MCQ▾

Question

Consider the decay of radium- (Ra 226) atom into an alpha particle and radon- (Rn 222). Then, what is the mass defect of the reaction-

Mass of radium -226 atom = 226.0256 u

Mass of radon - 222 atom = 222.0715 u

Mass of helium - 4 atom = 4.0026 u

Choices

Choice (4)Response

a.

0.0083 u

b.

0.0053 u

c.

0.083 u

d.

Question does not provide sufficient data or is vague

Question number: 1558

» Atoms and Nuclei » Composition and Size of Nucleus

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MCQ▾

Question

Nuclear radius of 8 O 16 is 3 × 10 -15 m. Find the density of nuclear matter.

Choices

Choice (4)Response

a.

1.66 × 10 17 kgm 3

b.

7.5 × 10 17 kgm -3

c.

5.7 × 10 17 kgm 3

d.

2.3 × 10 17 kgm -3

Question number: 1559

» Kinetic Theory of Gases » Kinetic Energy and Temperature

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MCQ▾

Question

The pressure P, volume V and temperature T of a gas in the jar A and the other gas in the jar B at pressure 2 P, volume and temperature 2T, then the ratio of the number of molecules in the jar A and B will be

Choices

Choice (4)Response

a.

1: 2

b.

4: 1

c.

2: 1

d.

1: 1

Question number: 1560

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

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MCQ▾

Question

The relation between the gas pressure P and average kinetic energy per unit volume E is

Choices

Choice (4)Response

a.

b.

c.

d.

Question number: 1561

» Kinetic Theory of Gases » Kinetic Energy and Temperature

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MCQ▾

Question

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 raise 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.

30 Cal

c.

50 Cal

d.

90 Cal

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