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प्रश्न
What is the shape of the wavefront on earth for sunlight?
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उत्तर
The sun is at very large distance from the earth. Assuming sun is spherical, it can be considered as a point source situated at infinity. We can treat it like a point object as seen from the surface of earth. Because of the large distance, the radius of wavefront can be considered Large (infinity) and hence, wavefront is almost plane.
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संबंधित प्रश्न
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(b) explain the particle behaviour of light
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(d) explain Snell's Law
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The inverse square law of intensity is valid for a
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