Consider the following statements. i) For a perfect reflection, the angle of incidence will be equal to the angle of reflection. ii) The critical angle is the angle of incidence in the denser medium for which the angle of refraction in the rarer medium is 90°. Which of the above statements are true?

Both i & ii
Only i
Only ii
None

LohaHridoy

4 views

2025-01-04 04:42

1 Answers

AhmedNazir

Option 1 : Both i & ii

CONCEPT:

Total internal reflection (TIR):

Total internal reflection (TIR) occurs at the interface of two transparent medium when the ray of light travels from a denser medium to a rarer medium.
The critical angle is the angle of incidence in the denser medium for which the angle of refraction in the rarer medium is 90°.

EXPLANATION:

From above it is clear that the critical angle is the angle of incidence at which the total internal reflection starts. Therefore statement 1 is correct.
And according to the law of reflection, Angle of reflection = Angle of incidence. Therefore statement 2 is correct.

4 views Answered 2022-09-04 04:29

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