Question

A rayof light passes from a medium x to another medium y. no refraction of light occurs if the ray of light hits the boundary of medium y at an angle of

Answer 1

Answer:

90°

Explanation:

Given that,

When a ray of light passes from medium x to another medium y, no refraction of light occurs.

To find the angle at which it should strike the boundary of the medium y.

We know that,

Only the ray of light striking the medium at normal, can move into another medium being undeviated.

Also, the normal lies at 90° to the mediums.

So, the ray of light must had striked at 90° .

That's why it moved undeviated.

And, if there is no deviations, then there is no refraction of light.

Hence, the required value of angle is 90°.

Answer 2

Answer:

90° is right answer....