A body is said to be opaque to the radiation | vedclass

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Question

(A) For any body,the sum of the coefficients of absorption $(a)$,reflection $(r)$,and transmission $(t)$ is always equal to $1$,i.e.,$a + r + t = 1$.A

Vedclass · Accepted Answer

$t=0$ and $a+r=1$

Vedclass · Answer

(A) For any body,the sum of the coefficients of absorption $(a)$,reflection $(r)$,and transmission $(t)$ is always equal to $1$,i.e.,$a + r + t = 1$.An opaque body is defined as a body that does not allow any radiation to pass through it.Therefore,the transmission coefficient $t$ for an opaque body is $0$.Substituting $t=0$ into the equation $a + r + t = 1$,we get $a + r = 1$.Thus,for an opaque body,$t=0$ and $a+r=1$.

$A$ body is said to be opaque to the radiation if ($a$,$r$,and $t$ are the coefficients of absorption,reflection,and transmission,respectively).

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