Question

Highschool science 

Answer 1

(1) D

given,

the angle the incidence=60°

We know,

the angle of incidence= the angle of reflection

So, the angle of reflection= 60°

(2) Snell's low,

[N₁₁ =N₂₂]

N₁=1.00

N₂= 1.18

$\Theta$₁=60°

$\Theta$₂=?

so,

1.00×Sin60°= 1.18×Sin$\Theta$₂

√3/2=1.18× Sin$\Theta$₂

√3÷(2×1.18)= Sin$\Theta$₂

_{1.732÷2.36= Sin$\Theta$2}

_{0.733= Sin$\Theta$2}

$\Theta$2=arcSin (0.733)

_$\Theta$2 =47.13°

So, the angle of refraction=47.13°