play-icon

Clothes We Wear in Different Seasons

8 MinsPhysics
smileIcon

Rate

NEXT VIDEOS

REVISE WITH CONCEPTS

What is Radiation?

ExampleDefinitionsFormulaes

Basic Knowledge of Applications of Radiation

ExampleDefinitionsFormulaes

Basic Knowledge of Radiation

ExampleDefinitionsFormulaes

Radiation and Applications

ExampleDefinitionsFormulaes

Changing Seasons and Shadows

ExampleDefinitionsFormulaes

Seasons

ExampleDefinitionsFormulaes

View more

QUICK SUMMARY WITH STORIES

Important Questions

The temperature of equal masses of three different liquids and are and respectively. The temperature when and are mixed is and when and are mixed it is . What should be the temperature when and are mixed?

View solution
>

A body cools from C to C in minutes. Calculate the time it takes to cool from C to C. The temperature of the surroundings is C.

View solution
>

A black body at a temperature of radiates heat energy at the rate . At a temperature of , the rate of heat radiated per unit area in will be:

View solution
>

A spherical black body with a radius of 12cm radiates 450W power at 500K. If the radius were halved and the temperature doubled, the power radiated in watts would be :

View solution
>

State Kirchhoff's law of radiation and prove it theoretically.

View solution
>

Certain quantity of water cools from to in the first minutes and to in the next minutes. The temperature of the surroundings is ;

View solution
>

A pan filled with hot food cools from to in minutes. When the room temperature is . How long will it cool from to ?

View solution
>

A body cools down from to in Minutes when the temperature of surrounding is . The temperature of the body after next minutes will be:

View solution
>

A sphere , a cube and a thin circular plate,all of same materials and same mass, are initially heated to same high temperature. 

View solution
>

The plots of intensity versus wavelength for three black bodies at temperatures  and  respectively are shown in fig. Their temperatures are such that:

26719
expand
View solution
>