NEET Physics: Questions 1563 - 1567 of 2099

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Question number: 1563

» Thermodynamics » Thermal Equilibrium

MCQ▾

Question

Two Carnot engines A and B are operated in succession. The first one, A receives heat from a source at r 1 = 500 and rejects to sink at T 2 K. The second engine B receives heat rejected by the first engine and rejects to another sink at r 3 =300K. If the work outputs of two engines are equal, then the value of T 2 will be

Choices

Choice (4) Response
a.

550K

b.

400K

c.

100K

d.

700 K

Question number: 1564

» Thermodynamics » Concept of Temperature

MCQ▾

Question

A scientist says that the efficiency of his heat engine which operates at source temperature 107°C and sink temperature 27°C is 26%, then

Choices

Choice (4) Response
a.

Data are incomplete

b.

It is impossible

c.

It is possible but less probable

d.

It is quite probable

Question number: 1565

» Thermodynamics » Thermal Equilibrium

MCQ▾

Question

For free expansion of the gas which of the following is true

Choices

Choice (4) Response
a.

Q=0,W>0andEint=W

b.

W>0,Q<0andEint=0

c.

W=0,Q>0,andEint=Q

d.

Q = W = 0 a n d ∆ E i n t = 0

Question number: 1566

» Kinetic Theory of Gases » Kinetic Energy and Temperature

MCQ▾

Question

The pressure and temperature of two different gases is P and T having the volume V for each. They are mixed keeping the same volume and temperature, the pressure of the mixture will be

Choices

Choice (4) Response
a.

2P

b.

P

c.

4P

d.

P2

Question number: 1567

» Kinetic Theory of Gases » Kinetic Energy and Temperature

MCQ▾

Question

Mean kinetic energy (or average energy) per gm molecule of a monoatomic gas is given by

Choices

Choice (4) Response
a.

32RT

b.

12KT

c.

32KT

d.

12RT

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