Question

If the amount of heat energy received per unit area from the sun is measured on earth, mars and Jupiter, it will be ___________

(a) The same for all

(b) In decreasing order Jupiter, Mars, Earth

(c) In increasing order Jupiter, Mars, Earth

(d) In decreasing order Mars, Earth, Jupiter

I had been asked this question in unit test.

I'd like to ask this question from Thermal Conduction in division Mechanical Properties of Solids of Engineering Physics I

Answer 1

The correct choice is (c) In increasing order Jupiter, Mars, Earth

For explanation I would say: Heat energy received on a planet varies inversely as the square of the distance from the sun. So Jupiter is lesser than  Mars is lesser than Earth.