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14 Jul 2011 21:28:17 IST

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light travels in two media A and B wiyh speeds 1.8 *10^8 m/s and 2.4 *10^8 m/s respectively. then

Physics

light travels in two media A and B wiyh speeds 1.8 *10^8 m/s and 2.4 *10^8 m/s respectively. then the critical angle between them answer----sin ^ -1(1/4)plzzz.. give me a detailed ans

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Vikram Saxena

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Joined: 1 Apr 2007

Posts: 3743

15 Sep 2011 22:24:05 IST

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R.I. of the medium is equal to speed of the light in vacuum /speed of light in medium

=3*10^8/1.8*10^8=1.6

=3*10^8/2.4*10^8=1.25

hence >

critical angle when light passing through to

sin *=

Vikram Saxena

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Joined: 1 Apr 2007

Posts: 3743

15 Sep 2011 22:30:15 IST

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critical angle should be

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