Correct option is C
Refraction:
· Refraction is the phenomenon where the direction of light changes when it passes through a transparent material of different density.
· This change in direction occurs because light travels at different speeds in different materials.
· When light enters a new medium at an angle, its speed changes, causing it to bend. This bending of light is what we observe as refraction.
Diffraction:
· The bending of light waves around obstacles or the spreading of light waves when they pass through small openings.
Dispersion:
· The separation of light into its constituent colors (spectrum) due to different wavelengths of light refracting by different amounts.
Reflection: The bouncing back of light rays when they hit a surface.
