# Thermodynamics (KVPY (Kishore Vaigyanik Protsahan Yojana) Stream SB-SX (Class 12 & 1st Year B.Sc.) Physics): Questions 7 - 9 of 32

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## Question number: 7

» Thermodynamics » Measurement of Temperature

Appeared in Year: 2012

MCQ▾

### Question

A cylindrical steel rod of length 0.10 m and thermal conductivity 50 Wm-1K-1 is welded end to end to copper rod of thermal conductivity 400 Wm-1K-1 and of the same area of cross section but 0.20 m long. The free end of the steel rod is maintained at 1000C and that of the copper rod at 00C. Assuming that the rods are perfectly insulated from the surrounding the temperature at the junction of the two rods is

### Choices

Choice (4) Response

a.

500 C

b.

200 C

c.

400 C

d.

300 C

## Question number: 8

» Thermodynamics » Work in Thermodynamic Process and PV Diagrams

Appeared in Year: 2011

MCQ▾

### Question

One mole of an ideal gas at initial temperature T, undergoes a quasi-static process during which the volume V is doubled. During the process the internal energy U obeys the equation, where a is a constant. The work done during this process is

### Choices

Choice (4) Response

a.

b.

c.

d.

## Question number: 9

» 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

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