A beam of light is incident from air to water at an angle of 300. Find the angle of refraction if the refractive index of water is 4/3

Question 1 Report

15

^{o}

18

^{o}

22

^{o}

24

^{o}

Answer Details

X = $\frac{4}{3}$ r = ?
Shell?s law:. 7 = $\frac{S i n 2^{0}}{S i n r^{0}}$
$\frac{V}{g}$ = $\frac{S i n 30^{0}}{S i n r^{0}}$
Sin $r^{0}$ = $\frac{3 S i n 30^{0}}{4}$
Sin $r^{0}$ = 0.375
R $^{o}$ = Sin-1 (0.375)
R $^{o}$ = 22.02 $^{o}$
R $^{o}$ = 22 $^{o}$

Read lesson note on Electromagnetic Waves: Types Of Radiation In Elect (WAEC)

Read lesson note on Refraction Of Light Through At Plane And Curved (JAMB)

Electromagnetic Waves: Types Of Radiation In Elect

Refraction Of Light Through At Plane And Curved

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