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In the Fraunhofer class of diffraction...

In the Fraunhofer class of diffraction

A

The source of light and the screen are al finile distance from diffracting apertura

B

The source and the screen are at infinite distances from the aperture

C

The source and the Screen are very close to each other

D

Both (1) & (3)

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The correct Answer is:
B
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AAKASH INSTITUTE ENGLISH-Mock Test 37-Example
  1. In Young's experiment, fringe width was found to be 0.8 mm. If whole a...

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  2. Choose the incorrect statement for the polarisation by reflection.

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  3. Plane polarized light can be obtained by using

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  4. In single sit diffraction experiment, the width of the central maximum...

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  5. In Young's double sit experiment two light sources when placed at a di...

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  6. A plane polarised light is passed through a polaroid, when the polaroi...

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  7. The intensity of light emerging from one slit is nine times than that ...

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  8. In the Fraunhofer class of diffraction

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  9. In a single slit diffraction pattern

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  10. A light of wavelength fall on a plane surface at an angle of incidence...

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  11. In Young's double slit experiment:

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  12. In YDSE, a glass slab of refractive index, mu= 1.5 and thickness 'l' i...

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  13. The diffraction effect can be observed in

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  14. In single slit experiment, if green light is instead of orange light t...

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  15. The amplitude factor of resulting wave, formed by superposition of two...

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  16. The average value of cos^2(phi/2) in one cycle is

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  17. Two sources with intensity 4I0 , and 9I0 , interfere at a point in med...

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  18. The path length difference between two waves coming from coherent sour...

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  19. Two waves of equal amplitude a from two coherent sources (S1 & S2) int...

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  20. When two waves of intensities l1 and l2 coming from coherent sources i...

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