Reciprocal of absorption coefficient in optical frequency range gives

Depth of penetration

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Strength of absorption

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Reflectivity

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Refractive index

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Solution

The correct option is A Depth of penetration
The absorption coefficient is described as the reciprocal of the depth of penetration of radiation into a bulk solid, i.e., it is equal to the depth at which the energy of the radiation has decreased by the factor of $e^{- α x}$ , where $α$ absorption coefficient

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Similar questions

Age in Years	:	5-10	10-15	15-20	20-25
Frequency	:	10	15	20	5

Find out range and coefficient of range of the following series.

$\begin{matrix} Size & 5 - 10 & 10 - 15 & 15 - 20 & 20 - 25 & 25 - 30 Frequency & 4 & 9 & 15 & 30 & 40 \end{matrix}$

(100 \times 40 \times 10) m^{3}

1000 m^{2}

0.2 m^{- 2}, 2000 m^{2}

0.7 m^{- 2}

1000

0.9

Size	$10 - 15$	$15 - 20$	$20 - 25$	$25 - 30$
Frequency	$2$	$4$	$6$	$8$

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