Question

the velocity of light in air is 300,000,000m/s and in glass is 200,000,000 m/s. The refractive index of glass is​

Answer 1

Answer:

Given :-

• The velocity of light in air is 300000000 m/s and in glass is 200000000 m/s.

To Find :-

• What is the refractive index of glass.

Formula Used :-

$\clubsuit$ Refractive Index Formula :

$\bigstar \: \: \sf\boxed{\bold{\pink{n =\: \dfrac{c}{v}}}}\: \: \: \bigstar$

where,

• n = Refractive Index
• c = Velocity of light in vacuum
• v = Velocity of light in the medium

Solution :-

Given :

• Velocity of light in air = 300000000 m/s
• Velocity of light in glass = 200000000 m/s

According to the question by using the formula we get,

$\implies \sf\bold{\blue{ n =\: \dfrac{c}{v}}}$

$\small \implies \sf Refractive\: Index_{(Glass)} =\: \dfrac{Velocity\: of\: light\: in\: air}{Velocity\: of\: light\: in\: substance}$

$\implies \sf Refractive\: Index_{(Glass)} =\: \dfrac{3\cancel{00000000}}{2\cancel{00000000}}$

$\implies \sf Refractive\: Index_{(Glass)} =\: \dfrac{3}{2}$

$\implies \sf\bold{\red{Refractive\: Index_{(Glass)} =\: 1.50}}$

$\sf\bold{\purple{\underline{\therefore\: The\: refractive\: index\: of\: glass\: is\: 1.50\: .}}}$

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Answer 2

Answer:

Explanation:

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