Question

Write down snell's law of refraction

Answer 1

Answer:

$\frac{n_{1}}{n_{2}} =\frac{sin\theta_{2}}{sin\theta_{1}}$

Explanation:

Snell's law of refraction states that the incident ray, the refracted ray and the normal to the interface, all lie in the same plane

Mathematically

$\frac{n_{1}}{n_{2}} =\frac{sin\theta_{2}}{sin\theta_{1}}$

Here $\theta_{1}$ is angle between the incident ray and normal to the interface.

$\theta_{2}$ is the angle between the refracted ray and normal to the interface.

​$n_{1}, n_{2}$ are refractive indices of the media 1 and 2 respectively.

Hence the Snell's law of refraction predicts that the light ray always deviates more towards normal in the optically denser medium and also away from the normal in the optically rarer medium

Answer 2

Answer:

Snells law, U= SINi/SINr

Explanation:

let 'r' is angle of refraction

let 'i' is angle of incidence

'U'(miu) is refractive index

then......

U=SINi/SINr