Question

what is cause of depression of white light through a glass prism? draw a ray diagram to show the path of line when 2 identical glass prism are arranged together in inverted position with respect to each other and a narrow beam of white light is.... to followed obliquely on one focus of prison​

Answer 1

Your question :-

What is cause of depression of white light through a glass prism? Draw a ray diagram to show the path of line when two identical glass prisms are arranged together in inverted position with respect to each other and a narrow beam of white light is allowed to fall obliquely on one of the focus of the first prism is given .

This is your answer

The dispersion of white light occurs because colors of white light travel at different speeds through the glass prism. When white light consisting of seven colors falls on a glass prism, each color in it is refracted by a different angle, with the result that seven colors are spread out to form a spectrum.

The ray diagram to show the path of light when two identical glass prisms are arranged together in inverted position with respect to each other and a narrow beam of white light is allowed to fall obliquely on one of the focus of the first prism is given  :-

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