Physics
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 ……….
Refraction Plane Surfaces
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Answer
(a) Total internal reflection occurs only when a ray of light passes from a denser medium to a rarer medium.
(b) Critical angle is the angle of incidence in denser medium for which the angle of refraction in rarer medium is 90°.
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