Home
Class 12
PHYSICS
it is estimated that per minute, each cm...

it is estimated that per minute, each `cm^2` of earth recives about 2 calories of heat energy from the sun. This constant is called solar constant S. Express solar constant in SI units.

A

`8 kW m^(-2)`

B

`1.4 kW m^(-2)`

C

`1.8 kW m^(-2)`

D

`2.5 kW m^(_2)`

Text Solution

AI Generated Solution

Promotional Banner

Similar Questions

Explore conceptually related problems

A conductor of length L is placed along the x - axis , with one of its ends at x = 0 and the other at x = L. If the rate of flow of heat energy through the conduct is constant and its thermal resistance per unit length is also constant , then Which of the following graphs is/are correct ?

Solar constant (S) depends upon the temperature of the Sun

The radiations emitted by the sun are analyzeed and the spectral energy distribution curve is plotted. as shown. The radius of the sun is R , the earth is situated a distance 'd' from the sun. Treat the sun as perfectly black body which radiates power at constant rate fill till its store of hydrogen gets exhausted. (Stefan's constant = sigma , Wien's constant =b , speed of light =c ) If the earth is at a distance 'd' from the sun the intensity of light falling on the earth (called solar constant S) is

Solar constant is defined as energy received by Earth per cm^(2) per minute. Find the dimensions of solar constant.

The solar constant is the amount of heat energy received per second per unit area of a perfectly black surface placed at a mean distance of the Earth form the Sun, in the absence of Earth's atmosphere, the surface being held perpendicular to the direction of Sun's rays. Its value is 1388 W//m^(2) . If the solar constant for the earth is 's'. The surface temperature of the sun is TK,D is the diameter of the sun, R is the mean distance of the Earth from the sun. The sun subtends a small angle 'theta' at the earth. Then correct options is/are:-

Would you expect the total energy of the solar system to be constant? What about the total angular momentum? Explain

The radiations emitted by the sun are analyzed and the spectral energy distribution curve is plotted. as shown. The radius of the sun is R , the earth is situated a distance 'd' from the sun. Treat the sun as perfectly black body which radiates power at constant rate fill till its store of hydrogen gets exhausted. (Stefan's constant = sigma , Wien's constant =b , speed of light =c ) Assume the sun produces energy only by nuclear fusion of hydrogen nuclei and the fraction of nuclear mass of hydrogen that can be converted to energy is eta . How long will the sun keep on emittied the energy if the mass of hydrogen at present in Sun's core is m?

The solar constant for a planet is S. The surface temperature of the sun is TK. The sun subtends an angle theta at the planet:

Experimental investigations show that the intensity of solar radiation is maximum for a wavelength 480 nm in the visible ragion. Estimate the surface temperature of sun. (Given Wien's constant b = 2.88 xx 10^(-3) m K ).

If the ratio of specific heat of a gas of constant pressure to that at constant volume is gamma , the change in internal energy of the mass of gas, when the volume changes from V to 2V at constant pressure p is