Grade 11Wave Optics
A fish in water, looks upward at an unobstructed overcast sky. what total angle does the sky apper to substend?
A fish in water, looks upward at an unobstructed overcast sky. what total angle does the sky apper to substend?
1 Answer
Arun
Critical angle
C = sin^-1 (1/mu)
C = sin^-1( 1/sqrt(2) )
C = 45°
Total angke does the sky appear to subtend
Theta = 2*C = 90°
Regards
Arun (askIITians forum expert)
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