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Answer the following questions: (c) Wh...

Answer the following questions:
(c) When a tiny circular obstacle is placed in the path of light from a distant source, a bright spot is seen at the centre of the shadow of the obstacle. Explain why?

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(i) Reflection between diffraction from each slit to the interference pattern in a double slit experiment : (b) The diffraction pattern is itself due to interference of wavelength belonging to same.
(ii) Waves diffracted from the edge of the circular obstacle interfere constructively at the centre of the shadow producing a bright spot.
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