The reflection coefficient and absorption coefficient of a body are 0.3 and 0.2 respectively. The percentage of radiation transmitted

Options

A. 0.1
B. 0.5
C. 0.2
D. 0.3

Answer

B

Explanation

Given `r = 0.3, a = 0.2`
`because " "r + a + t 1`
or `0.3 +0.2 + t = 1`
or `t =1 - 0.5 = 0.5`
or 50%