___ is the phenomenon which occurs when a propagated wave strikes a medium boundary at an angle larger than a particular critical angle with respect to the normal to the surface.

Total internal reflection

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Refraction

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Diffusion

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All the above

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Solution

The correct option is A Total internal reflection
Total internal reflection occurs when a propagated wave strikes a medium boundary at an angle larger than a particular critical angle with respect to the normal to the surface. The 2 main conditions for the total internal reflection to occur is that the light should be in the more denser medium and it should approach the less denser medium and the angle of incidence should be greater than the critical angle.

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Similar questions

Q. When a ray of light traveling in a (A) Medium, is incident at the surface of a (B) Medium such that angle if incidence is (C) than the critical angle for the pair of media, the ray is totally reflected back into the (D) medium. This phenomenon is called total internal reflection.

Fill in the blanks to complete the following sentences :

(a) Total internal reflection occurs only when a ray of light passes from a .............................medium to a ..........................medium.

(b) Critical angle is the angle of ................in denser medium for which the angle of ..............in rarer medium is .................

Q. Which of the following conditions are necessary for total internal reflection to take place at the boundary of two optical media ?
1. Light is passing from optically denser medium to optically rarer medium.
2. Light is passing from optically rarer medium to optically denser medium.
3.Angle of incidence is greater than the critical angle.
4.Angle of incidence is less than the critical angle.

Q. A ray of light from a denser medium strikes the plane boundary of a rarer medium at an angle of incidence

I

. The angle of refraction is

r

. If the reflected and the refracted rays are mutually perpendicular the critical angle of the medium is :

Q. When light travels from a denser medium to a rarer medium at an angle less than the critical angle, the ray is

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