NEET Physics: Questions 1466 - 1470 of 2098

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Question number: 1466

» Thermodynamics » Carnot Engine and Its Efficiency

MCQ▾

Question

The temperature of sink of Carnot engine is 27°C and Efficiency of engine is 50%. Then temperature of source

Choices

Choice (4) Response

a.

327°C

b.

227ºC

c.

127ºC

d.

27°C

Question number: 1467

» Kinetic Theory of Gases » Kinetic Energy and Temperature

MCQ▾

Question

A gas in container A is in thermal equilibrium with another gas in container B, both contain equal masses of the two gases in the respective containers. Which of the following can be true?

(1) PA=PB , VAVB

(2) PAVA=PBVB

(3) PAPB , VA=VB

(4) PAVA=PBVB

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

Choices

Choice (4) Response

a.

1 and 2 are correct

b.

2 and 4 are correct

c.

1, 2 and 3 are correct

d.

1 and 3 are correct

Question number: 1468

» Kinetic Theory of Gases » Kinetic Energy and Temperature

MCQ▾

Question

The root mean square velocity of a gas molecule of mass m at a given temperature is proportional to

Choices

Choice (4) Response

a.

m

b.

1m

c.

m 2

d.

m

Question number: 1469

» Atoms and Nuclei » Mass-Energy Relation

MCQ▾

Question

If mass equivalent to one mass of electron is completely converted into energy then determine the energy liberated.

Choices

Choice (4) Response

a.

0.51 MeV

b.

2.12 MeV

c.

3.12 MeV

d.

1.51 MeV

Question number: 1470

» Thermodynamics » Concept of Temperature

MCQ▾

Question

Eight moles of an ideal gas performs a cycle shown in figure. If the temperature T A = 1200 K, T B = 1600 K, T c = 4400 K and T D = 2400 K, the work done per

System of ideal gas – Trapezoid ABCD

System of Ideal Gas – Trapezoid ABCD

In above figure six moles of an ideal gas performs a cycle are shown.

Choices

Choice (4) Response

a.

120 kJ

b.

160 KJ

c.

106 kJ

d.

139 kJ

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