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Direction of the first secondary maximum...

Direction of the first secondary maximum in the Fraunhofer diffraction pattern at a single slit is given by (a is the width of the slit)

A

`asintheta=(lamda)/(2)`

B

`acostheta=(3lamda)/(2)`

C

`asintheta=lamda`

D

`asintheta=(3lamda)/(2)`

Text Solution

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The correct Answer is:
D
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ALLEN-WAVE OPTICS-Exercise 1 (Check your Grasp)
  1. All fringes of diffraction are of-

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  2. A single slit of width d is placed in the path of beam of wavelength l...

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  3. Direction of the first secondary maximum in the Fraunhofer diffraction...

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  4. Angular width of central maximum of a diffraction pattern on a single ...

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  5. Red light is generally used to observe diffraction pattern from single...

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  6. Calculate angular width of central maxima if lamda=6000Å,a=18xx10^(-5)...

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  7. In single slit fraunhoffer diffraction which type of wavefront is requ...

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  8. In the diffractin pattern of a single slit aperture, the width of the ...

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  9. Central fringe obtained in diffraction pattern due to a single slit-

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  10. In a single slit diffraction pattern, if the light source is used of l...

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  11. In the laboratory, diffraction of light by a single slit is being obse...

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  12. Find the half angular width of the central bright maximum in the fraun...

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  13. In a fraunhofer's diffraction by a slit, if slit width is a, wave leng...

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  14. In a fraunhofer's diffraction obtained by a single slit aperture, the ...

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  15. A polariser is used to

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  16. Light waves can be polarides as they are

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  17. Through which character, we can distinguish the light waves form sound...

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  18. The angle of polarisation for any medium is 60^(@) what will be critic...

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  19. The angle of incidence at which reflected light is totally polarised f...

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  20. A polaroid is placed at 45^(@) to an incoming light of intensity I(0) ...

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