Question

Out of 100 kcal/second of incident radiant energy on the surface of a thermally transparent body, 300 kcal/second is reflected back. if the transmissivity of the body is 0.25, the emissivity of the surface will be

Answer 1

Please ask questions one at a time. Or in groups of not more than three. We cater to large number of students and experience heavy traffic with respect to answering questions. So, it is a humble request to post questions one at a time and not in one go as you have done.

We hope you understand our concern.

Thanks!!

rohit...