MCQ
The wavefronts of light coming from a distant source of unknown shape are nearly:
- APlane.
- BElliptical.
- CCylindrical.
- DSpherical.
Explanation:
Wave travelling from a distant source always has plane wavefront.
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(a) Room temperature |
(b) Low temperature |
|
(c) High temperature |
(d) Both (b) and (c) |
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(a) 2 |
(b) 3 |
(c) 4 |
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(a) |
(b) Weber |
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(a) Forest density |
(b) Pollution |
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