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प्रश्न
What type of wavefronts are associated with a source infinity?
विकल्प
Cylindrical wavefronts
Plane wavefronts
Spherical wavefronts
All types of wavefronts
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उत्तर
Plane wavefronts
Explanation:
A distant source is so far away that it is thought to be infinity. Rays traveling from a distant light source are assumed to be planes moving in the direction of wave propagation, and so the wavefront is a plane wavefront.
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संबंधित प्रश्न
State Huygen’s principle.
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Is Huygen’s principle valid for longitudinal sound waves?
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Represent diagrammatically how the incident planar wavefronts of wavelength λ pass through an aperture of size d, when d is approximately equal to λ.
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In Huygens' principle, what does each point of the wavefront act as?
What did Huygens argue about the amplitude of secondary wavelets?
