Question

Why the intensity of light ray decreases after some reflection ?

Answer 1

➡️Because of loss of energy.

$whenever \: reflection \: takes \: place \: energy \: loss \: also \: occurs \: that \: leads \: to \: decrease \: in \: intensity \\ \\ because \: \\ intensity = \frac{energy}{area } s \\ ince \: energy \: is \: decreasing \: hence \: intensity \: get \: decreased$
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