When Some Part Of Radiation Is Absorbed And Remaining Part Is Reflected

Radiation Part 1

Radiation Part 2

Ultraviolet radiations is absorbed by:

Rs. 960 is received as an interest in 5 years at Rs. 3600 , while some part of it is given on 4% rate and remaining part is given at 6% rate. Find both part.

A ray of light falls on a transparent glass plate. Part of it is reflected and part is refracted. The reflected and refracted rays can be perpendicular to each other for