Question

Note:
You are attempting question 4 out of 12
The heat exchange between two spheres is by radiation only. The radius of sphere II is 2
times of the radius of sphere I. If 10% of energy emitted by sphere II is falling on sphere
then what is the percentage of energy emitted by sphere I that is falling on sphere II.
(A) 40%
(B) 25%
(C) 10%
(D) 30%
Answer
A
D
Submit​

Answer 1

Answer:

from the above question answer is option d