Home
Class 12
PHYSICS
A perfect black body emits radiation at ...

A perfect black body emits radiation at temperature `T_(1)""^(@)K`. If it is to radiate 16 times this power, its temperature `T_(2)` will be :

A

`T_(2)=16T_(1)`

B

`T_(2)=8T_(1)`

C

`T_(2)=4T_(1)`

D

`T_(2)=2T_(1)`.

Text Solution

Verified by Experts

The correct Answer is:
D
`(E_(2))/(E_(1))=((T_(2))/(T_(1)))^(4)" "rArr(16E)/(E)=((T_(2))/(T_(1)))^(4)`
`rArrT_(2)=2T_(1)`.
Thus correct choice is (d).
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 spherical black bodies of radii r_(1) and r_(2) and with surface temperatures T_(1) and T_(2) respectively, radiate the same power. Then r_(1)//r_(2) must be equal to

Two bodies at different temperatures T_(1) and T_(2) , if brought in thermal contact do not necessarily settle to the mean temperature (T_(1)-T_(2))//2 . Why ?