A Black metal foil receives radiation of...

A Black metal foil receives radiation of power P from a hot sphere at absolute temperature T, kept at a distance d. If the temperature is doubled and distance is halved, then Power will be

64P

16P

Text Solution

Verified by Experts

The correct Answer is:

Topper's Solved these Questions

TRANSMISSION OF HEAT
AAKASH SERIES|Exercise PRACTICE SHEET (EXERCISE-II) Thermal Conduction (LEVEL-II) Straight Objective Type Questions|18 Videos
TRANSMISSION OF HEAT
AAKASH SERIES|Exercise PRACTICE SHEET (EXERCISE-II) Thermal Conduction (LEVEL-II) More than One correct answer Type Questions|9 Videos
TRANSMISSION OF HEAT
AAKASH SERIES|Exercise PRACTICE SHEET (EXERCISE-I) Thermal Conduction (LEVEL-II) Integer Type Questions|3 Videos
TRANSMISSION OF HEAT
AAKASH SERIES|Exercise QUESTION FOR DESCRIPTIVE ANSWER|4 Videos
UNITS AND MEASUREMENT
AAKASH SERIES|Exercise Practice Exercise|45 Videos

Similar Questions

Explore conceptually related problems

If the absolute temperature of a black body is doubled then Energy radiated by it in a given time intervaL will be increased by

The ends of a metal rod of length 40 cm are maintained at temperatures 100^(@)Cand20^(@)C respectively. At steady state condition, the temperature at a point at a distance 30 cm from the hot end of the rod is

The temperature of a spherical black body is inversely proportional to its radius . If its radius is doubled then the power radiating from it will be

Intensity of radiation received by an absorber is 100 units when the distance between source & absorber is 'd' units. If the distance is doubled then intensity received will be

(A) : The radiation from the sun's surface varies as the fourth power of its absolute temperature. ( R) : According to Stefan's Law E=sigmaT^(4)

AAKASH SERIES-TRANSMISSION OF HEAT-PRACTICE SHEET (EXERCISE-II) Thermal Conduction (LEVEL-I) Straight Objective Type Questions

If reflecting and transmitting powers of a body are 0.2 and 0.3 units,...
Text Solution
|
If wavelengths of maximum intensity of radiations emitted by the sun a...
Text Solution
|
The wavelength of maximum energy released during an atomic explosion w...
Text Solution
|
Three discs A, B and C having radii 2m, 4m and 6 m respectively are co...
Text Solution
|
The absolute temperature of a body A is four times that of another bod...
Text Solution
|
The wavelength of maximum intensity of radiation emitted by a star is ...
Text Solution
|
The rate of emission of radiation of a black body at temperature 27^(@...
Text Solution
|
If the temperature of a Black body increases by 50% then amount of rad...
Text Solution
|
The ratio of intensities of radiation at distances of R and 3R from a ...
Text Solution
|
An incandescent light bulb has a tungsten filament that is heated to a...
Text Solution
|
The radiation emitted by a star "A" per second is 10,000 times that of...
Text Solution
|
The rectangular surface of area 8"cm "xx4" cm" of a black body at a te...
Text Solution
|
Two objects A and B have same shape and area. The Emissivity of A is 0...
Text Solution
|
Two identical bodies have temperatures 277^(@)C and 67^(@)C. If the su...
Text Solution
|
A body having a surface area of 5.0" cm"^(2), radiates 300 J of energy...
Text Solution
|
A Black metal foil receives radiation of power P from a hot sphere at ...
Text Solution
|
A star behaves like a perfect Black body emitting radiant energy. The ...
Text Solution
|
A solid sphere is at a temperature T.K. The sphere is cut into two hal...
Text Solution
|