A ray of light travelling through air falls on the surface of a glass

1.	A ray of light travelling through air falls on the surface of a glass slab at an angle i. Itis found that the angle between the reflected and the refracted rays is 90°. If thespeed of light in glass is 2 x 10 m/s, find the angle of incidence.I have the solution I needed explanation. ASAP
Answer» Answer: If carbon tetrachloride has an INDEX of refraction of 1.461, what is the SPEED of light through this liquid? (c = 3 X 108 m/s) a. 4.38 x 108 m/s b. 2.05 x 108 m/s c. 4.461 x 108 m/s d. 1.461 x 108 m/s Answer: B Use the EQUATION v=c/n where n = 1.461 and c = speed of light in a vacuum (3x108 m/s).

A ray of light travelling through air falls on the surface of a glass slab at an angle i. Itis found that the angle between the reflected and the refracted rays is 90°. If thespeed of light in glass is 2 x 10 m/s, find the angle of incidence.I have the solution I needed explanation. ASAP

Answer»

Answer:

If carbon tetrachloride has an INDEX of refraction of 1.461, what is the SPEED of light through this liquid? (c = 3 X 108 m/s)

a. 4.38 x 108 m/s

b. 2.05 x 108 m/s

c. 4.461 x 108 m/s

d. 1.461 x 108 m/s

Answer: B

Use the EQUATION v=c/n where n = 1.461 and c = speed of light in a vacuum (3x108 m/s).

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A ray of light travelling through air falls on the surface of a glass slab at an angle i. Itis found that the angle between the reflected and the refracted rays is 90°. If thespeed of light in glass is 2 x 10 m/s, find the angle of incidence.I have the solution I needed explanation. ASAP​

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A ray of light travelling through air falls on the surface of a glass slab at an angle i. Itis found that the angle between the reflected and the refracted rays is 90°. If thespeed of light in glass is 2 x 10 m/s, find the angle of incidence.I have the solution I needed explanation. ASAP