1)if angle of incidence is 56 and it is decreased by 15 dagree then draw the path of a ray by drawing a diagram by using exact value of angle of incidence and angle of refraction.as refractive index of glass is 1.5.

Question

1)if angle of incidence is 56 and it is decreased by 15 dagree then draw the path of a ray by drawing a diagram by using exact value of angle of incidence and angle of refraction.as refractive index of glass is 1.5.
2)name the phenomenon of light which u observe above.

drwls · Answer

In your question, it is not clear which angle is being decreased by 15 degrees. If they want you to calculate the angle of refraction for 56-15 = 41 degree incidence, then use Snell's law for the new angle of refraction.

We cannot draw figures for you. You will have to do that yourself.