Category: heat A-level
Define how a liquid-in-glass thermometer can be used to measure temperature in degrees Celsius.
Define how a liquid-in-glass thermometer can be used to measure temperature in degrees Celsius. A bulb is inserted in pure ice-water mixture. After some time, ... Read More
Define thermometric property
Define thermometric property Thermometric property is a physical measurable property that varies linearly and continuously with temperature and is constant at constant temperature. Please ... Read More
Define specific latent heat of vaporization.
Define specific latent heat of vaporization. Specific latent heat of vaporization is the amount of heat energy required to change 1kg of a liquid to ... Read More
Define Thermal conductivity.
Define Thermal conductivity. Thermal conductivity s the rate of heat flow per unit cross section area per unit temperature gradient Please Subscribe to promote this ... Read More
State Dalton’s law of partial pressures.
State Dalton’s law of partial pressures. Dalton’s law states that the total pressure of a mixture of gases that to not react chemically is equal ... Read More
Describe an experiment to determine the temperature dependence of saturated vapour pressure of water.
Describe an experiment to determine the temperature dependence of saturated vapour pressure of water. The pressure of the air in R is shown by ... Read More
Explain why evaporation causes cooling
Explain why evaporation causes cooling When a liquid vaporizes, the most energetic molecules escape from the surface leaving less energetic molecules in the liquid. Since ... Read More
Distinguish between a saturated vapour and unsaturated vapour.
Distinguish between a saturated vapour and unsaturated vapour. A saturated vapour is one that is a dynamic equilibrium with its own liquid while unsaturated vapour ... Read More
What is meant by a reversible process?
What is meant by a reversible process? A reversible process is a process that can proceed in a reverse direction by very small change in ... Read More
Explain why cloudy nights are warmer than cloudless ones.
Explain why cloudy nights are warmer than cloudless ones. During day, radiation is absorbed from the sun by earth. At night, the earth radiated heat ... Read More
Describe Electrical method of determining the specific heat capacity of a good conducting solid.
Describe Electrical method of determining the specific heat capacity of a good conducting solid. Two holes are drilled into the specimen solid of mass m. ... Read More
What is a black body?
What is a black body? A black body is one that absorbs all radiations incident on it without reflecting or transmitting any. Please Subscribe ... Read More
State any three properties of ultraviolet radiation.
State any three properties of ultraviolet radiation. Produces ionization Produces fluorescence Affects photographic films Produces photoelectric effect Absorbed by glass Can be polarized Promotes chemical ... Read More
Heat A-level physics revision questions with answers
(a) (i) State any three properties of ultraviolet radiation.(03marks) Produces ionization Produces fluorescence Affects photographic films Produces photoelectric effect Absorbed by glass Can be polarized ... Read More