Physics, asked by suryaveerchandila22, 9 months ago

a ray of light pases from air to glass (n=1.5) at an angle of 30° .calculate the angle of refraction.​

Answers

Answered by Anonymous
12

GiveN :

  • n = 1.5
  • Angle of incidence (i) = 30°

To FinD :

  • Angle of refraction

SolutioN :

From 2nd law of refraction we can conclude that :

\longrightarrow \boxed{\sf{n\ =\ \dfrac{\sin i}{\sin r}}}

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\longrightarrow \sf{1.5\ =\ \dfrac{\sin 30^{\circ}}{\sin r}}

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\longrightarrow \sf{\sin r\ =\ \dfrac{\sin 30^{\circ}}{1.5}}

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\longrightarrow \sf{\sin r\ =\ \dfrac{\dfrac{1}{2}}{1.5}}

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\longrightarrow \sf{\sin r\ =\ \dfrac{0.5}{1.5}}

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\longrightarrow \sf{\sin r\ =\ 0.33}

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\longrightarrow \sf{r\ =\ \sin^{-1} (0.33)}

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\longrightarrow \sf{r\ =\ 19.26^{\circ}}

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