alleryHUYGENS' PRINCIPLE states that every point on a wavefront acts as a:
ASource of secondary spherical wavelets
BReflector of all incident wave energy
CPolariser of the incident wave
DAbsorber of half the wave energy
Answer & Solution
Correct answer: A. Source of secondary spherical wavelets
**Huygens' principle:** every point on a wavefront is a source of SECONDARY SPHERICAL WAVELETS.
The new wavefront is the envelope of these wavelets.
Used to derive Snell's law and reflection.
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