Same chapter3 marksDifficulty: Medium
Distinguish between interference and diffraction of light.
Wave Optics
3 marksDifficulty: Medium
What is polarisation, and what does it prove about the nature of light?
Original Khojo Papers practice question — not from a past board paper.
Answer
Polarisation is the restriction of the vibrations of a light wave to one plane. Only transverse waves can be polarised, because a longitudinal wave has no vibration across the direction of travel, so the fact that light can be polarised proves that light waves are transverse.
No citable source has been recorded for this record. Treat it as practice material, not as fact.
Explanation
Brewster's law gives the angle at which reflected light is completely plane polarised.
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