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To observe diffraction, the size of the ...

To observe diffraction, the size of the obstacle

A

Should be of the same order as wavelength

B

Should be much smaller than the wavelength

C

Has no relation to wavelength

D

should be exactly `(lambda)/2`

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A
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AAKASH INSTITUTE ENGLISH-WAVE OPTICS-Assignment (Section-A (objective type question(one option is correct)))
  1. When a compact disc is illuminated by a source of white light, coloure...

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  2. For what distance is ray optics a good approximation when the aperture...

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  3. To observe diffraction, the size of the obstacle

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  4. In a single slit diffraction pattem

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  5. Diffraction and interference of light refers to -

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  6. A polariser in used to

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  7. Light waves can be polarides as they are

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

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  9. The angle of polarisation for any medium is 60^(@) , what will be crit...

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  10. Which of the following cannot be polarised?

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  11. An unpolarised light of intensity Io is passed through a polaroid. The...

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  12. Refractive index of material is equal to tangent of polarising angle. ...

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  13. Two nicols are oriented with then principal planes making an anlge of ...

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  14. In the case of linearly polarized light, the magnitude of he electric ...

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  15. When the angle of incidence on a material is 60^(@), the reflected lig...

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  16. For the sustained interference of light, the necessary condition is th...

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  17. Which of the following is conserved when light waves interfere ?

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  18. Huygen wave theory allows us to know:

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  19. If one of the slits in Young's double slit experiment is fully closed,...

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  20. In young's experiment, the separation between 5th maxima and 3rd minim...

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