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If the diffraction pattern due to single...

If the diffraction pattern due to single slit of width `a` with incident light of wavelength `lambda` with angle off diffraction `theta ` ,the condition for the first minimum is

A

`lambda sin theta =a`

B

`a cos theta = lambda`

C

`a sin theta = lambda`

D

`lambda cos theta = a`.

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MODERN PUBLICATION-UNIT TEST -06-EXERCISE
  1. Scattering of light is a direct consequence of

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  2. The width of the difraction band varies

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  3. If the diffraction pattern due to single slit of width a with incident...

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  4. What will be the effect on the interferece fringes,if red light is rep...

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  5. The interfernce phenomenon differs from diffraction in that unlike dif...

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  6. The resolution limit of the eye is 1 minute.At a distance x km from th...

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  7. Two points separated by a distance of 0.1 mm can just be inspected in ...

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  8. the limit of resolution of a 100 cm aperture telescope for light for w...

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  9. The liit of resuolution of one meter radio telescope for radio waves ...

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  10. The aperture of the largest telescope in teh world is of the order of ...

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  11. Which of the following phenomenon shows the transverse nature of light...

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  12. The waves that cannot be polarised are:

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  13. When a polariod is rotated,the intenstiy of ligth is not found to vary...

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  14. What are plane of polarisation and plane of vibration?

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  15. In the propagation of ligth waves,the ngle between the direction of pr...

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  16. When the light is incident at the polarising angle ,which of the follo...

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  17. A ray of light is incident on a medium at polarising angle .What is th...

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  18. What is the polarising anle of a medium of refractive index sqrt3?

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  19. The expression relating polarising angle nad refrractive indes is

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  20. If the speed of light and the polarising angle for a given medium are ...

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