JEE PHYSICS MCQ: THERMAL PROPERTIES OF MATTER

1 Medium

1 of 1

Application +4 | -1

A black body at

{227^0}C

radiates heat at the rate of

7\,\,Cal/c{m^2}s

. At a temperature of

{727^0}C

, the rate of heat radiated in the same units will be

View answer and explanation

Correct option: C

112

Option C (112) is correct because the rate of heat radiated is proportional to the fourth power of the absolute temperature, according to Stefan-Boltzmann law.

More Questions from THERMAL PROPERTIES OF MATTER

Practice All Chapter MCQs →

In the relation

n = \frac{{PV}}{{RT}},n =

Mud houses are cooler in summer and warmer in winter because For cooking the food, which of the following type of utensil is most suitable Which of the following statements is correct? 300 gm of water at

{25^0}

is added to 100 g of ice at

{0^0}C

. The final temperature of the mixture is A black body radiates energy at the rate of

E\,\,W{m^{ - 2}}

at a high temperature T K. When the temperature is reduced to

\left( {\frac{T}{2}} \right)K

the radiant energy is