Home
Class 12
PHYSICS
Two spheres made of same material have r...

Two spheres made of same material have radii in the ratio `1:2`. Both are at same temperature. Ratio of heat radiation energy emitted per second by them is :

A

`1:2`

B

`1:8`

C

`1:4`

D

`1:16`.

Text Solution

Verified by Experts

The correct Answer is:
C
According to Stefan.s law `E=sigmaAT^(4)`.
`:.(E_(1))/(E_(2))=(A_(1))/(A_(2))*((T_(1))/(T_(2)))^(4)=1/4xx1=1/4`
Correct choice is (c ).
Promotional Banner

Topper's Solved these Questions

  • TRANSFERENCE OF HEAT

    MODERN PUBLICATION|Exercise Multiple Choice Questions (Level - II)|49 Videos

  • TRANSFERENCE OF HEAT

    MODERN PUBLICATION|Exercise Multiple Choice Questions (Level - III) Questions From AIEEE/JEE Examination)|5 Videos

  • SOLIDS & SEMICONDUCTOR DEVICES

    MODERN PUBLICATION|Exercise Revision Test|28 Videos

  • UNIFORM CIRCULAR MOTION

    MODERN PUBLICATION|Exercise Revision Test |57 Videos

Similar Questions

Explore conceptually related problems

Two conductors of the same material have their diameters in the ratio 1 : 2 and their lengths in the ratio 2:1. If the temperature difference between their ends is the same, then the ratio of amounts of heat conducted per second through them will be

Two conductor of the same material have their diameter in the ratio 1 : 2 and their lengths in the ratio 2 : 1 . If the temperature difference between their ends is the same, then the ratio of amounts of best conducted per second through them will be