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For what distance is ray optics a good a...

For what distance is ray optics a good approximation when the aperture is `3 mm` wide and wavelength is `500 nm` ? (NCERT Solved Example)

A

32m

B

69m

C

16 m

D

8m

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The correct Answer is:
A
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AAKASH INSTITUTE-WAVE OPTICS-Assignment (Section-A (objective type question(one option is correct)))
  1. Red light is generally used to observe diffraction pattern from single...

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  2. When a compact disc is illuminated by a source of white light, coloure...

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

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  4. To observe diffraction, the size of the obstacle

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  5. In a single slit diffraction pattern

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  6. Diffraction and interference of light refers to -

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  7. The limit of resolution of an optical instrument arises on account of

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  8. A polariser in used to

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  9. Light waves can be polarised as they are

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  10. Through which character we can distiguish the light waves from sound w...

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

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  12. Which of the following cannot be polarised?

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  13. Unpolarised light of intensity I is passed through a polaroid. What is...

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

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  15. Two polrizers are oriented with transmission planes making an angle of...

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  16. In case of linearly polarised light, the magnitude of the electric fie...

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

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

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  19. Which of the following is conserved when light waves interfere

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  20. Huygens wave theory allows us to know

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