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Mathematics 11 Online
OpenStudy (anonymous):

f critical angle for a medium is 45°, then refractive index of the medium will be : (a) √2 (b) 2 (c) 1/2 (d) none of these

OpenStudy (anonymous):

Please reply quickly. My test is going on.

OpenStudy (anonymous):

Koi to answer karo. PLzzzzzzzz

OpenStudy (anonymous):

option a pakka

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