Question

when light enters from one medium to another,the quantity which remains constant is? frequency,velocity,wavelength and amplitude

Answer 1

When light enters from one medium to another, the quantity which remains constant is frequency.

• When a light ray travels from one medium to another, its direction changes at the interface due to change in velocity and it seems to bend at the interface.
• To compensate change in velocity , wavelength also changes but the frequency remains constant.
• The velocity can either increase or decrease depending on the optical density of the media.