LV's answer to Libby's Secondary 3 A Maths Singapore question.
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Refractive index of water at 20 deg C, w = 1.33
Refractive index of typical crown glass, g = 1.52
By Snell’s Law,
w sin i = g sin r
sin r = (w/g) * sin i
r = arcsin [(w/g) * sin i]
= 42.8 degree (to 1 d.p.)
Refractive index of typical crown glass, g = 1.52
By Snell’s Law,
w sin i = g sin r
sin r = (w/g) * sin i
r = arcsin [(w/g) * sin i]
= 42.8 degree (to 1 d.p.)
Date Posted:
4 years ago
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