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Question 10
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- Explain wave-particle duality of light.
- Illustrate your answer in 10(a) with observable phenomena.
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Few candidates attempted this question and it was well answered. However, some got part (b) wrong. They were describing light and matter rather than stating the observable phenomena.
The expected answers are:
- Light exists in two forms: wave and particle
- (i) wave nature - reflection, refraction, diffraction, polarization and interference
(ii) particle nature - emission and absorption of light
-- photo-electricity
-- momentum
-- radiation of energy from hot bodies.
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