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Calculate speed of light in medium …

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Calculate speed of light in medium whose critical angle is 45

Posted by Azhar Reshi 4 years, 10 months ago

CBSE > Class 12 > Physics

2 answers

Shivam Saroj 4 years, 10 months ago

2.12×10^8

Bhawna Chaudhary 4 years, 10 months ago

Sin c= R.I of air/ R.I of medium ( c is critical angle) Sin45 = 1/R.I of medium R.I of med. =1/sin45 R.I of med. =√2= 0.414 Also we know R.I Of med = speed of light in air/ speed of light in that med.(v) √2= 3 . 10^8/v v = 3. 10^8/√2 mpersecond

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