Same chapter3 marksDifficulty: Medium
An object is placed between two plane mirrors inclined at 60°. How many images are formed?
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3 marksDifficulty: Medium
Distinguish between regular and diffuse reflection, and state why we can see a wall from every direction.
Original Khojo Papers practice question — not from a past board paper.
Answer
In regular reflection a parallel beam falling on a smooth surface is reflected as a parallel beam, as from a mirror. In diffuse reflection the surface is rough at the scale of the wavelength, so the reflected rays go in all directions. A wall reflects diffusely, so light from it reaches the eye wherever the observer stands.
No citable source has been recorded for this record. Treat it as practice material, not as fact.
Explanation
The laws of reflection are obeyed at every point in both cases.
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