Answers section
Questions 1.2(a)
- What happens to a rubber balloon when inflated in a cool morning then left hanging out for long hours till the Sun becomes hot?
- During heating in the Sun, you may not see the volume changing. What is the evidence that volume of the trapped air changes?
- What happens to temperature of the trapped gas (or air)?
- Which of the quantities P, V and T is more or less constant in this case?
- How does volume of a gas vary with temperature?
- An inflated rubber balloon bursts if left in a hot Sun for long.
- Before a balloon bursts, it must stretch to its limit, implying an increase in volume of the gas.
- Temperature increases as the Sun heats up the balloon.
- Pressure is somewhat constant.
- Volume of a fixed mass of gas increases with temperature, if pressure is constant.
Answers to Questions 1.2(a) 