Thermodynamics-Concept of Temperature (KVPY Stream SB-SX (Class 12 & 1st Year BSC) Physics): Questions 1 - 4 of 4

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Question number: 1

» Thermodynamics » Concept of Temperature

Appeared in Year: 2012

MCQ▾

Question

Two identical bodies are made of a material for which the heat capacity increases with temperature. One of these is held at a temperature of 1000C while the other one is kept at 00 C. If the two are brought into contact, then, assuming no heat loss to the environment, the final temperature that they will reach is,

Choices

Choice (4) Response
a.

less than 500C

b.

00C

c.

more than 500C

d.

500C

Question number: 2

» Thermodynamics » Concept of Temperature

MCQ▾

Question

A body cools down from 600 C to 500 C in 10 minutes. Its temperature comes down to 450 C in next ten minutes. The temperature of surroundings is –

Choices

Choice (4) Response
a.

150 C

b.

400 C

c.

300 C

d.

550 C

Question number: 3

» Thermodynamics » Concept of Temperature

MCQ▾

Question

A solid copper sphere cools at the rate of 3.20 C per minute, when its temperature is 1770 C. Find the rate at which another solid copper sphere of twice the radius lose its temperature at 3770 C, if in both the cases, the room temperature is maintained at 270 C.

Choices

Choice (4) Response
a.

9.290Cmin1

b.

7.290C min-1

c.

8.290Cmin1

d.

6.290Cmin1

Question number: 4

» Thermodynamics » Concept of Temperature

MCQ▾

Question

A sound wave passing through air at NTP produces a pressure of 0.002dyne/cm2 during a compression. The corresponding change in temperature (given γ = 1.5 and assume gas to be ideal) is –

Choices

Choice (4) Response
a.

1.93×107K

b.

1.93×106K

c.

1.93×108K

d. All of the above

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