Home
Class 11
PHYSICS
The rectangular surface of area 8 cm xx ...

The rectangular surface of area `8 cm xx 4 cm` of a black body at temperature `127^(@)C` emits energy `E` per second. If length and breadth are reduced to half of the initial value and the temperature is raised to `327^(@)C`, the emission energy becomes

A

`3/8E`

B

`(81)/(16)E`

C

`9/(16)E`

D

`(81)/(64)E`

Text Solution

Verified by Experts

The correct Answer is:
D
Promotional Banner

Topper's Solved these Questions

  • TRANSMISSION OF HEAT

    CENGAGE PHYSICS|Exercise Single correct|9 Videos
  • TRANSMISSION OF HEAT

    CENGAGE PHYSICS|Exercise Comprehension|4 Videos
  • THERMODYNAMICS

    CENGAGE PHYSICS|Exercise 24|1 Videos
  • TRAVELLING WAVES

    CENGAGE PHYSICS|Exercise Integer|9 Videos

Similar Questions

Explore conceptually related problems

The rectangular surface of area 8 cm xx 4 cm of a black body at temperature 127^(@)C emits energy E per section if length and breadth are reduced to half of the initial value and the temperature is raised to 327^(@)C , the ratio of emission of energy becomes

The rectangular surface area 12cm xx 6cm of a black body at a temperature of 127^(@)C , emits heat energy at the rate of Q units per second. If the length and breadth of the surface area are each reduced to half of its initial value and the temperature is increased to 327^(@)C , then the rate of emission of heat energy will be

A black rectangular surface of area A emits energy E per second at 27^circC . If length and breadth are reduced to initial value and temperature is raised to 327^circC , then energy emitted per second becomes

A black body is at a temperature of 527^(@)C , to radiate twice as much energy per second its temperature must be increased to

A body of surface area 10 cm^(2) and temperature 727 ^(@) C emits 600 J of enrgy per minute. Find its emissivity.

The energy emitted per second by a black body at 27^(@)C is 10 J. If the temperature of the black body is increased to 327^(@)C , the energy emitted per second will be

A black body of surface area 5cm^(2) , is kept at 127^(@)C . The rate of energy radiated by it is E. If its temperature is increased to 527^(@)C , then the increase in the rate of energy radiation will be

A black body at a temperature of 227^(@)C radiates heat energy at the rate of 5 cal/cm-sec. At a temperature of 727^(@)C , the rate of heat radiated per unit area in cal/cm will be

A black body at temperature 227^(@)C radiates heat at the rate of 5 cal/ cm^(2) , at a temperature of 27^(@)C , the rate of heat radiated per unit area per unit time in cal/ cm^(2) s, is