Question

20. When a light ray travelling in glass is incident on an air surface,

(A) it will refract away from the normal

(B) some of the light may be reflected

(C) all of the light may be reflected

(D) all of A, B, and C
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Answer 1

Answer:

(D) all of A, B, c

Explanation:

because light can travelling in straight line soon

I hope answer help...

Answer 2

When a light ray travelling in glass is incident on an air surface, (A) it will refract away from the normal.

What will happen when a light beam going in glass on an air surface?

• At the point when a beam of light passes from a less dense material (eg air) into a denser material (eg glass or water) it is twisted away from the surface between the two materials.
• This truly intends what is happening the point of refraction is in every case not exactly the point of frequency.
• Assuming the point of occurrence is greater than the basic point, the refracted beam won't rise up out of the medium, yet will be reflected once again into the medium.
• This is called complete internal reflection.

What is refraction?

• The refraction of light Happens when a beam of light goes at a point into an alternate medium with an alternate refractive file.
• Refraction happens when the power of a refracted beam is under an occurrence beam.
• A beam of light is refracted when the deviation of the piece of light happens.

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