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The wavefronts of light coming from a distant source of unknown shape are nearly (a) plane (b) elliptical

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in Physics by (138k points)
The wavefronts of light coming from a distant source of unknown shape are nearly

(a) plane

(b) elliptical

(c) cylindrical

(d) spherical.
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1 Answer

+1 vote
by (144k points)
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Best answer

The correct answer is

(a) plane

Explanation:

When the point source or linear source of light is at very large distance, a small portion of spherical or cylindrical wavefront appears to be plane. Such a wavefront is plane wavefront. 

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