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2 years ago

The critical angle for total internal reflection occurs when:___________.

Physics

1 answer:

Anastaziya [24]2 years ago

5 0

Answer:

b) the refracted ray has an angle of 90 degrees

Explanation:

The angle of incidence is measured with respect to the normal separation of the media. The critical angle for total internal reflection occurs is:

$\theta=arcsin(\frac{n_2}{n_1})$

Here $n_2$ and $n_1$ are the refractive index of the mediums. This equation is an application of Snell's law, for the case where the refracted ray has an angle of $90^\circ$ .

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Answer:

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This centripetal force will be equal to the tension in the string and thus we can write,

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