Assertion : infrared radiation plays an important role in maintaining the average temperature of earth
Reason : Infrared radiations are sometimes referred to as heat waves.

(Attempt any ten of the following questions) Explain in brief – "Infrared waves are sometimes referred to as heat waves."

Assertion (A) : Atmosphere plays an important role in maintaining the heat balance on earth. Reason (R) : Atmosphere absorbs a portion of electromagnetic coming from the sun and transmits near UV, visible and near IR radiation.

A : Atmosphere plays an important role in maintaining the heat balance on earth. R : Atmosphere absorbs a portion of electromagnetic readiation coming from the sun and transmits near UV, visible and near IR radiation.

Assertion (A): In humans, males play an important role in determining the sex of the child. Reason (R): Males have two X chromosomes.

Which of the following electromagnetic wave play an important role in maintaining the earth's warmth or average temperature through the greenhouse effect?

Which of the following electromagnetic wave play an important role in maintaining the earth's warmth or average temperature through the greenhouse effect?

Infrared lamps are used in restaurants to keep the food warm. The infrared radiation is strongly absorbed by water, raising its temperature and that of the food. If the wavelength of infrared radiationis assumed to be 1500 nm, and the number of quanta of infrared radiation produced per second by an infrared lamp (that consumes enregy at the rate of 100 W and is 12% effcient only) is (xx10^(19) , then the value of x is : (Given: h= 6.665xx10^(-34)J-s)

Infrared lamps are used in restaurants to keep the food warm. The infrared radiation is strongly absorbed by water, raising its temperature and that of the food. If the wavelength of infrared radiationis assumed to be 1500 nm, and the number of quanta of infrared radiation produced per second by an infrared lamp (that consumes enregy at the rate of 100 W and is 12% effcient only) is (x xx10^(19) , then the value of x is : (Given: h= 6.665xx10^(-34)J-s)