Question

a ray of light is travelling from air to water.what is the angle i=?,if angle r=40° in water take refractive index of water =1.32

Answer 1

Answer:

58degrees

Explanation:

we know that as for snells law sin(i)/sin(r) =refractive index.

Answer 2

sin i/sin r= refractive index of second media with respect to first

therefore,

sin i/sin r=1.3

sin i/sin 40=1.3

sin i=0.6*1.3

sin i=7.8

sin i=sin 51.3 degree

i=51.3 degree

i=51 degree

Hope it helps you