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zheka24 [161]
3 years ago
10

The number of electrons in one coulmb charge is ?

Physics
1 answer:
polet [3.4K]3 years ago
4 0
6.25 x 1018 electrons :)
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Light is incident on an air-water interface at an angle of 30 degree to the normal. What angle does the refracted ray make with
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Answer:

22 degree

Explanation:

Angle of incidence, i = 30 degree

the refractive index of water with respect to air is 4/3.

As the ray of light travels from rarer medium to denser medium, that mean air to water, the refraction takes place.

According to Snell's law,

Refractive index of water with respect to air = Sin i / Sin r

Where, r be the angle of refraction

4 / 3 = Sin 30 / Sin r

0.75 = 2 Sin r

Sin r = 0.375

r = 22 degree

Thus, the angle of refraction is 22 degree.

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