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An equilateral prism of refractive index 0.53 is immersed in water of refractive index 0.43. If a ray of light passing through the prism undergoes minimum deviation, the angle of incidence on the first refracting face of the prism is :
$s i n^{- 1} (\frac{53}{86})$
30 $^{\circ}$
45 $^{\circ}$
$s i n^{- 1} (\frac{3}{5})$

A

30

^{\circ}

B

45

^{\circ}

C

s i n^{- 1} (\frac{53}{86})

D

s i n^{- 1} (\frac{3}{5})

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