## A beam of light strikes a sheet of glass at an angle of 56.6° with the normal in air. You observe that red light makes an angle of 38.4° wit

Question

A beam of light strikes a sheet of glass at an angle of 56.6° with the normal in air. You observe that red light makes an angle of 38.4° with the normal in the glass, while violet light makes a 36.4° degree angle.
1.What are the indexes of refraction of this glass for these colors of light?

2.What are the speeds of red and violet light in the glass?

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3 years 2021-07-20T11:05:09+00:00 1 Answers 164 views 0

(a). Index of refraction are = 1.344 & = 1.406

(b). The velocity of red light in the glass 2.23 ×

The velocity of violet light in the glass 2.13 ×

Explanation:

We know that

Law of reflection is

Here

= angle of incidence

= angle of refraction

(a). For red light

1 × = ×

= 1.344

For violet light

1 × = ×

= 1.406

(b). Index of refraction is given by

= 1.344

2.23 ×

This is the velocity of red light in the glass.

The velocity of violet light in the glass is given by

2.13 ×

This is the velocity of violet light in the glass.