Post Utme Aaua 2021 Physics Question 21

Practice objective / multiple choice question 21 from the 2021 Post Utme Aaua Physics examination.

Post Utme Aaua 2021 Physics Objective / Multiple Choice

Question 21 POST_UTME_AAUA • 2021 • PHYSICS • objective

A parallel beam of light is incident on a glass slab of thickness $t$ and re\fractive index $mu$. If the angle of incidence is $i$, what is the angle of re\fraction $r$?

A. $ \sin r = \frac{\sin i}{mu} $

Correct Answer B. $ \sin r = \frac{\sin i}{mu} left\( 1 - \frac{mu^2 - 1}{2} \frac{t}{R} \right \ $ )

C. $ \sin r = \frac{\sin i}{mu} left\( 1 + \frac{mu^2 - 1}{2} \frac{t}{R} \right \ $ )

D. $ \sin r = \frac{\sin i}{mu} left\( 1 + \frac{mu^2 - 1}{2} \frac{t}{R} \right \ $^2 )

Correct Answer

Correct Option:

$ \sin r = \frac{\sin i}{mu} left\( 1 - \frac{mu^2 - 1}{2} \frac{t}{R} \right \ $ )

This is Post Utme Aaua 2021 Physics Question 21. It is one of the objective questions from the 2021 Post Utme Aaua Physics examination.

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