Physics Past Questions and Answers

2 kg of water is heated with a heating coil which draws 3.5 A from a 200 V mains for 2 minutes. what is the increase in temperature of the water?
[specific heat capacity of water = 4200 jkg ^-1k^-1]

I. Increase the melting point of the liquid.
II. Increase the boiling point of the liquid.
III. Decrease the melting point of the liquid.
IV. Decrease the boiling point of the liquid.
which of the statement above about the effect on increase in pressure in a liquid are correct?

I. Mass
II. Density
III. Temperature
IV. Nature of substance
which of the above affect diffusion?

I. Mass
II. Density
III. Temperature
IV. Nature of substance
which of the above affect diffusion?

The blade of a hoe feel colder to touch in the morning than the wooden handle because the