A small circular disc is placed in the path of monochromatic light. The centre of the geometrical shadow is always

bright

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dark

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coloured

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partly bright and partly dark

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Solution

The correct option is A bright
Bright due to diffraction

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A small circular disc is placed in the path of monochromatic light. The centre of the geometrical shadow is always

The correct option is A brightBright due to diffraction

The correct option is A bright
Bright due to diffraction