Home
Class 11
PHYSICS
Two spheres of the same materical have r...

Two spheres of the same materical have radii `1m` and `4m` nad temperature `4000K` and `2000K` respectively The energy radiated per second by the first sphere is .

A

greater than that of the second

B

Less than that of the second

C

equal in both cases

D

the information is incomplete to draw any conclusion

Text Solution

Verified by Experts

The correct Answer is:
C
`p=sigmaAT^(4)=sigma4pir^(2)T^(4)rArr(P_(1))/(P_(2))=((r_(1))/(r_(2)))xx((T_(1))/(T_(2)))^(4)`
Promotional Banner

Topper's Solved these Questions

  • TRANSMISSION OF HEAT

    NARAYNA|Exercise LEVEL - 2 (C.W)|1 Videos

  • TRANSMISSION OF HEAT

    NARAYNA|Exercise LEVEL - (C.W)|27 Videos

  • TRANSMISSION OF HEAT

    NARAYNA|Exercise LEVEL -1 (C.W)|1 Videos

  • THERMODYNAMICS

    NARAYNA|Exercise Exercise|187 Videos

  • UNITS AND MEASUREMENTS

    NARAYNA|Exercise STATEMENT TYPE QUESTION|23 Videos

Similar Questions

Explore conceptually related problems

Two spheres of the same material have radii 1m and 4m and temperatures 4000K and 2000K respectively. The energy radiated per second by the first sphere is greater than that by the second.

Two spheres of the same material have radii 1m and 4m and temperature 4000Kand 2000K respectively.The energy radiated per second by the first sphere is:

Two spheres of the same materical have radii 1m and 4m and temperature 400K and 2000K respectively The ratio of the energy radiated per second by the first sphere to that by the second is .

Two spheres of the same material have radii 1m and 4m and temperatures 4000K and 2000K respectively. The ratio of the energy radiated per second by the first sphere to that by the second is

Two spheres of same material have radius 1 m and 4 m and temperature 4000 K and 2000 K respectively. The energy radiated per second by the first sphere is

Two spheres of the same material have radii 1m and 4m and temperatures 4000K,respectively. The ratio of the energy radiated per second by the first sphere to that by the second is

Two spheres of same material have radii 1m and 2m are at temperature of 2000K and 1000K respectively.The ratio of energy radiated in unit time is

Two spheres of same material have radii 1m and 2m are at temperature of 2000K and 1000K respectively.The ratio of energy radiated in unit time is

Two spherre of the same material and radii 4 m and 1m respectively are at temperature 1000 K and 2000 K respectively. The ratio of energies radiated by them per second is

Two spheres of the same material having radii r and 4r and temperature 2T_(0) and T_(0) respectively. The ratio of rate of radiation of energy by the sphere is