Question

यदद काांच का अप्तगनाांक 1.5 तथा c= 3x108 m/s हैतो काचां में प्रकाश की चाल ज्ञात करो ?​

Answer 1

$\huge\sf\bold\pink{ANSWER:-}$

Given :-

$\sf{reflexive \: index \: Of \: glass = 1.5}$

$\sf{velocity \: Of \: light \: in \: vacuum \: (C) = 3\times 10^{8} \: m/s}$

To Find :-

$\sf{velocity \: of \: light \: in \: glass(phase) = ?}$

Reflexive Index Formula :-

$\: \: \: \: \: \: \: \: \: \: \: \: \: \:$$\sf{n =\dfrac{c}{v}}$

Where ,

‎$\: \: \: \: \:$ • n = reflaxive index

$\: \: \: \: \:$ • c = velocity of light in vacuum

$\: \: \: \: \:$ • v = velocity of light in phase

Explanation :-

On Using the above formula -

$\: \: \: \: \:$$\sf{v =\dfrac{c}{n}}$

$\: \: \: \: \:$$\sf{v =\dfrac{3\times 10^{8}}{1.5}}$

$\: \: \: \: \:$$\sf{v = 2\times 10^{8} \: m/second}$

$\sf{velocity \: of \: light \: in \: glass \: is \: 2\times 10^{8} \: m/s.}$

Extra Related Value as example :-

$\sf{reflaxive \: index \: of -}$

$\: \: \: \: \: \: \: \: \: \: \: \: \:$$\sf{air = 1}$

$\: \: \: \: \: \: \: \: \:$$\sf{water = 1.33}$

$\: \: \: \: \: \: \:$$\sf{diamond = 2.42}$