The solar constant for the earth is about `1.8J//m^(2)//s`. What is the solar constant for a black body situated on a planet which is situated at a distance of 0.3 times the distance of the earth from the sun ?

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:-

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:-

Compare the period of rotation of planet Mars about the sun with that of the earth. The mean distance of the Mars from the sun is 1.52 AU.

A certain planet's year is 8 times the earth's year. Find the distance of this planet from the sun if the distance of the earth is 1 AU from the sun.

What is the solar system? Name the planets situated between the sun the earth.

The solar constant for the earth is s . The surface temperature of the sun is T K . The sun subtends an angle theta at the earth :-

Calculate the solar constant on a planet which is approximately 5 A.U. from the sun. Assume the solar constant on earth as 1400 Wm^(-2) .

A planet's year is 11 times the earth's year. Calculate the distance of this planet from the sun if the distance of the earth is 1.50xx10^8 km from the sun.

Find the escape velocity of particle of mass m which is situated at a radial distance r (from centre of earth) above the earth's surface. M is the mass earth.

The period of revolution of a planet around the sun is 8 times that of the earth. If the mean distance of that planet from the sun is r, then mean distance of earth from the sun is