Home
Class 12
PHYSICS
If the radius of a star is R and it acts...

If the radius of a star is `R` and it acts as a black body, what would b the temperature of the star, in which the rate of energy production is `Q`?

A

`((4piR^(2)Q)/(sigma))^(1//4)`

B

`((Q)/(4piR^(2)sigma))^(1//4)`

C

`(Q)/(4piR^(2)sigma)`

D

`((Q)/(4piR^(2)sigma))^(-1//2)`

Text Solution

Verified by Experts

Promotional Banner

Similar Questions

Explore conceptually related problems

The wavelength of maximum energy distribution by a star A is 4500 Å at a temperature of 5000 K. Calculate the temperature of star B for which wavelength of maximum energy distribution is 8000 Å.

The total radiant energy per unit area, normal to the direction of incidence, received at a distance R from the centre of a star of radius r whose outer surface radiates as a black body at a temperature T K is given by (where sigma is Stefan's constant)

A star radiates maximum radiation at wavelength lamda_m at temperature T. What will be the temperture of another star which radiates maximum energy of wavelength 2lamda_m ?

A black body is at a temperature 300 K . It emits energy at a rate, which is proportional to

The temperature at which a black body ceases to radiate energy is .

The rate at which a black body emits radiation at a temperature T is proportional to

Two spherical bodies A (radius 6cm) and B (radius 18cm) are at temperature T_(1) and T_(2) respectively The maximum intensity in the emission spectrum of A is at 500 nm and in that of B is at 1500nm considering them to be black bodies, what will be the ratio of the rate of total energy radiated by A to that of B . ?

If temperature of black body increases from 300K to 900K , then the rate of energy radiation increases by