When white light passes through a triangular glass prism, there is dispersion because of
A
diffraction of light
B
polarisation of light
C
the difference in speed of the components of light
D
the interference of light waves in glass
Verified Correct Answer: C.
Physical Principles & Numerical Solution
When white light passes through a prism, dispersion occurs because different colors (wavelengths) of light travel at different speeds in the glass. This causes the colors to spread out and form a spectrum, with red bending the least and violet bending the most.
Source: Myschool Past Questions Archive (Record #33823)