Answer:
Explanation:
a )
Refractive index of ice = sini / sin r where i is angle of incidence and r is angle of refraction
angle of incidence = 90 - 45 = 45
angle of refraction = 30
refractive index of ice μ = sin 45 / sin 30
= 2/ √2
μ = √2 = 1.414
μ = 1 / sin C where C is critical angle for ice - air interface
sinC = 1 / μ
= 1 / 1.414
= .70
C = 44 .42° .
b )
real depth / apparent depth = refractive index
2 / apparent depth = 1.414
apparent depth = 2 / 1.414
= 1.414 cm .
