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A point source of light is …

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A point source of light is place 4 m below the surface of water of refractive index 5/3 . The minimum diameter of disc which should be placed over the source on the surface of water to cut off all light coming out of water is ( mu=5/3)

Posted by Saba Elias 6 years, 11 months ago

CBSE > Class 11 > Physics

6 answers

Ʌɐpɐʎ Ɐuɐɥsɹɐp . 6 years, 11 months ago

tnx.. ?✌️

Ankit Singh 6 years, 11 months ago

Nice answer darshana

Ʌɐpɐʎ Ɐuɐɥsɹɐp . 6 years, 11 months ago

OK then,, here it is ⤵️ ➡️ sin i = 1/μ = 3/5.......... ➡️tan i = 3/4= r/4.. by solving this we get radius = 3 m.... now we know that diameter =2×radius.. so,,,, diameter =2×3=6m....hope you understand.. ✌️

Saba Elias 6 years, 11 months ago

Yah... its right give me the full solution

Ʌɐpɐʎ Ɐuɐɥsɹɐp . 6 years, 11 months ago

if it is correct then I can give full solution of it..

Ʌɐpɐʎ Ɐuɐɥsɹɐp . 6 years, 11 months ago

answer may be 6m...

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