When a ray of light enters a transparent medium, it undergoes a change in:
A
Wavelength only
B
Wavelength and velocity both
C
Frequency only
D
Velocity and frequency both
Correct Option:
B
Explanation
When light passes from one medium into another, its frequency remains unchanged because it is determined by the source. Its speed changes in the new medium. Since v = fλ and f is constant, the wavelength also changes. Therefore, both wavelength and velocity change.
