A body at higher temperature contains more heat. Comment

A black body at a high temperature T radiates energy at the rate of E. When the temperature falls to T/2,the radiated energy will be

Explain - Silicon is heated with methyl chloride at high temperature in the presence of copper.

Both growth and differentiation in higher plants are open'. Comment.

Two spheres made of same meterial have radii in the ratio 1:2 both are the same temperature Ratio of heat radiation energy emitted per sec by them is

State Henry's law. At the same temperature, hydrogen gas is more soluble in water than helium gas. Which one of them will have higher value of K_H ?

How does the elasticity of material change on, (a) increasing the temperature. (b) on heating and cooling gradually. (c) on hammering.

Heat is generated continuosly in an electric heater ,but its temperature becomes constant after some time.Why?

Explain why: n optical pyrometer (for measuring high temperatures) calibrated for an ideal black body radiation gives too low a value for the temperature of a red hot iron piece in the open, but gives a correct value for the temperature when the same piece is in the furnace

Two cylinders A and B of equal capacity are connected to each other via a stopcock. A contains a gas at standard temperature and pressure. B is completely evacuated. The entire system is thermally insulated. The stopcock is suddenly opened. Answer the following: What is the change in the temperature of the gas?