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3 years ago

Please help on this one

Physics

1 answer:

Oksi-84 [34.3K]3 years ago

6 0

When a hypothesis is confirmed true by evidence from many experiments, it becomes widely accepted by scientists, and it gets a new name: 'Theory' .

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If the index of refraction for a certain glass is 1.5, and the angle of refraction is 15 degrees for a ray of light

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Answer:

$\theta_i = 23^o$

Explanation:

The refractive index of a medium is given by the following formula:

$\eta = \frac{Sin\theta_i}{Sin\theta_r}$

where,

η = refractive index = 1.5

$\theta_i$ = angle of incidence = ?

$\theta_r$ = angle of refraction = 15°

Therefore,

$1.5 = \frac{Sin\theta_i}{Sin15^o}\\\\Sin\theta_i=(1.5)Sin15^o\\\\\theta_i = Sin^{-1}(0.388)\\\\$

$\theta_i = 23^o$

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