Question

Monochromatic light passes through a prism. Compared to that in air, inside the prism the light’s

• A. speed and wavelength are different, but frequency remains same
• B. speed and frequency are different, but wavelength remains same
• C. wavelength and frequency are different, but speed remains same
• D. speed, wavelength and frequency are all different

Answer 1

Answer: (A)

Frequency is a characteristics of source it does not changes during refraction process.
Inside the prism wavelength and speed are reduced than that in air.