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प्रश्न
Wave normals to spherical wavefronts can be ______.
पर्याय
Only diverging
Only converging
Parallel to each other
Diverging or converging
MCQ
रिकाम्या जागा भरा
उत्तर
Wave normals to spherical wavefronts can be Diverging or converging.
Explanation:
It is drawn perpendicular to the wave front, or at 90° to the wave front in the direction of light propagation.
The spherical surfaces in this case are wave fronts, and normal on them are perpendicular to these wave fronts.
shaalaa.com
Huygens’ Theory
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