alleryA straight straw partly in water appears bent at the surface. Which explanation is correct?
ADiffraction around the straw
BRefraction at the water–air boundary
CReflection at the water–air boundary
DDispersion into different colours
Answer & Solution
Correct answer: B. Refraction at the water–air boundary
The submerged part appears displaced because light refracts as it passes from water into air.
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