When a ray of light enters a glass slab from air: |
its wavelength decreases its wavelength increases its frequency increases neither its wavelength nor its frequency changes |
its wavelength decreases |
The correct answer is Option (1) → its wavelength decreases Yes, when a ray of light enters a glass slab from air, its wavelength decreases. This happens due to the change in the speed of the light as it passes from one medium to another. |