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A fish in water, looks upward at an unobstructed overcast sky. what total angle does the sky apper to substend?

Sunil Adhikari , 8 Years ago
Grade 11
anser 1 Answers
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)
Last Activity: 8 Years ago
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