Q9.2Multiple choice
A short pulse of white light is incident from air to a glass slab at normal incidence. After travelling through the slab, the first colour to emerge is
- (a)blue.
- (b)green.
- (c)violet.
- (d)red. Ray Optics and Optical Instruments
A short pulse of white light is incident from air to a glass slab at normal incidence. After travelling through the slab, the first colour to emerge is