Boiling Point: O Level Physics Notes Questions with Answers PDF Download - 123

Boiling point of alcohol is

1. 79 °C
2. 89 °C
3. 99 °C
4. 109 °C

Every temperature measuring instrument makes use of a physical property of a substance in order to measure temperature objectively, which physical property is used by Thermocouple?

1. Electromotive force
2. Volume of a fixed mass of liquid
3. resistance of a piece of metal
4. Pressure of a fixed mass of gas at constant volume

Characteristics of a plane mirror are

1. upright, virtual, inverted, diminished
2. same size, upright, inverted, virtual
3. inverted, same size, real, upright
4. inverted, magnified, virtual, upright

Two quantities that have same SI unit are

1. Efficiency and Power
2. Efficiency and Work
3. Work and Energy
4. Energy and Power

Energy released or absorbed during change of state is known as

1. Heat capacity
2. Latent heat
3. Thermal capability
4. Thermal oxidation