Question

White light is split into a spectrum by a prism and it is seen on a screen. If we put another identical inverted prism behind it in contact, what will be seen on the screen?

• A. Violet will appear where red was
• B. The spectrum will remain the same
• C. There will be no spectrum, but only the original light with no deviation.
• D. There will be no spectrum, but the original light will be laterally displaced.

Answer 1

The correct option is D There will be no spectrum, but the original light will be laterally displaced.

the combination will be have as parallel slab so light get laterally displaced without any spectrum