Which one of the following correctly states the law of refraction for light passing…

PHYSICS · Single correct · A Level · Physics · Waves · Waves

Problem

Which one of the following correctly states the law of refraction for light passing from medium 1 (refractive index

n_1

) to medium 2 (refractive index

n_2

)? (a)

\dfrac{n_1}{n_2}=\dfrac{\sin i}{\sin r}

(b)

n_1\sin i = n_2\sin r

(c)

n_1\cos i = n_2\cos r

(d)

n_1\sin r = n_2\sin i