Engineering Physics I Mock Test 5

1. Cooking gas containers are kept in a lorry moving with uniform speed. The temperature of the gas molecules inside will ___________

2. Average velocity of a gas becomes 4 times. What will be the effect on rms velocity at the same temperature?

3. A man is standing on an international space station which is orbiting earth at an altitude 520km with a constant speed 7.6km/s. If the man’s weight is 50kg, his acceleration is ___________

4. We have a jar filled with gas characterised by parameters P, V and T and another jar B filled with a gas with parameters 2P, V/4,2T; where the symbols have their usual meanings. The ratio of the number of molecules of jar A to those of jar B is?

5. A gas behaves as an ideal gas at ___________

6. An ideal gas is pressed at a constant temperature. Its internal energy ___________

7. Calculate the work done if temperature is changes from 0°C to 200°C at one atmosphere.

8. An ideal gas heat engine is operating between 227°C and 127°C. It absorbs 10⁴ J of heat at the higher temperature. The amount of heat converted into work is?

9. The mechanical energy can be completely converted into heat energy but the whole of the heat energy cannot be converted into mechanical energy.

10. A body A of mass 0.5kg and specific heat 0.85 is at a temperature of 60°C. Another body B of mass 0.3kg and specific heat 0.9 is at a temperature of 90°C. When they are connected to a conducting rod, heat will flow from ___________