Time Left: 600 sec

1. Two identical rectangular strips, one of copper and the other of steel, are riveted as shown to form a bi-metal strip. On heating, the bi-metal strip will

2. Four cylindrical rods of different radii and lengths are used to connect two heat reservoirs at fixed temperatures t1 and t2 respectively. From the following pick out the rod which will conduct the maximum quantity of heat:

3. The temperature for which the reading on Celsius and Fahrenheit scales are identical is

4. A steel tape is calibrated at 20° C. A piece of wood is being measured by steel tape at 10°C and reading is 30 cm on the tape. The real length of the wood is:

6. The coefficient of liner expansion of a cubical crystal along three mutually perpendicular direction is and . What is the coefficient of cubical expansion of crystal?

9. The relation between coefficient of volume expansion and coefficient of linear expansion is