hitechpathshala

Q. 1

A

B

C

D

Q. 2

Four rods with different radii r and length l are used to connect two reservoirs of heat at different temperatures. Which one will conduct most heat?

r = 1 cm, l = 1 m

r = 2 cm, l = 2 m

r = 1 cm, l = 1/2 m

r = 2 cm, l = 1/2 m

Q. 3

A

B

C

D

Q. 4

A

B

C

D

Q. 5

A

B

C

D

Q. 6

A

B

C

D

Q. 7

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B

C

D

Q. 8

A

B

C

D

Q. 9

A spherical black body with a radius of 12 cm radiates 450 W power at 500 K. If the radius were halved and the temperature doubled, the power radiated in watts would be

225

450

900

1800

Q. 10

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B

C

D

Q. 11

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B

C

D

Q. 12

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B

C

D

Q. 13

A

B

C

D

Q. 14

Which of the following molecular properties is same for all ideal gases at a given temperature?

rms momentum

rms velocity

mean kinetic energy

mean free path

Q. 15

A

B

C

D

Q. 16

A

B

C

D

Q. 17

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B

C

D

Q. 18

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B

C

D

Q. 19

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B

C

D

Q. 20

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C

D

Q. 21

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C

D

Q. 22

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D

Q. 23

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B

C

D

Q. 24

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B

C

D

Q. 25

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B

C

D

Q. 26

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B

C

D

Q. 27

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B

C

D

Q. 28

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B

C

D

Q. 29

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C

D

Q. 30

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B

C

D

Q. 31

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B

C

D

Q. 32

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B

C

D

Q. 33

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B

C

D

Q. 34

a

b

c

d

Q. 35

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B

C

D

Q. 36

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B

C

D

Q. 37

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B

C

D

Q. 38

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B

C

D

Q. 39

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C

D

Q. 40

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B

C

D

PHYSICS QUIZ 87(THERMAL PHYSICS)

Marks: 200