Question

Hey can you tell this answer​

Answer 1

Answer:

When the frequency of the ray of light travels from one medium to other medium only the wavelength changes and the frequency remains unchanged.

Explanation:

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Answer 2

Answer:

1)When two plane mirrors are placed at right angle to each other, then the incident and reflected rays will always be parallel to each other.

2)Wave speed, frequency and wavelength in refraction

Although the wave slows down, its frequency remains the same, due to the fact that its wavelength is shorter. When waves travel from one medium to another the frequency never changes. As waves travel into the denser medium, they slow down and wavelength decreases

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