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A small circular disce is placed in the ...

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

A

bright

B

dark

C

coloured

D

partly bright and partly dark

Text Solution

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The correct Answer is:
A
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NIKITA PUBLICATION-INTERFERENCE AND DIFFRACTION-MULTPLE CHOICE QUESTIONS
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  2. For obtaining diffraction pattern, aperture of the slite should be of ...

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  3. A small circular disce is placed in the path of monochromatic light. T...

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  4. A very samml opaque is place in the path of monochormatic light. Its ...

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  5. The ratio of intensities of consecutive maxima in the diffraction patt...

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  6. A zone plae acts similar to a

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  7. The phase difference between two waves from successive half period zo...

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  8. The diffraction effect can be observed in

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  9. The fringes produce in diffraction pattern are of

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  10. The tip of needle does not give a sharp image. This is due to

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  11. Angular width (beta) of central maximum of a diffraction pattern on a ...

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  12. On increasing the slite widht, the width of central maximum

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  13. The position of minima in the diffraction pattern due to a single slit...

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  14. The diffraction effect of light expresses that

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  15. The size of the obstacel in order to observe diffraction fo light must...

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  16. Fresnel's zones are known as half period zones because the path diffre...

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  17. The amplitudes of two consecutive half period zone are of

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  18. The phase difference between the first and thrid half period zone is

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  19. The central point of the diffraction pattern due to a circular disc is

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  20. In the diffraction pattern due to single slit, in the direction of the...

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