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What is polarisation ?...

What is polarisation ?

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The phenomenon of restricting the vibrations of light in a particular plane perpendicular to the direction of propagation of wave is known as polarisation.
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MODERN PUBLICATION-WAVE OPTICAL-Revision Exercises (Very Short Answer Questions)
  1. State one defect of Huygens's wave theory.

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  2. In case of diffraction from a singel slit, if red light is replaced by...

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  3. What is the condition for the nth secondary minima in case of diffract...

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  4. Which quantity associated with light wave sets the limit of ability to...

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  5. (a) Distinguish between unpolarized light and linearly polarized lig...

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  6. Define resolving power of an optical instrument.

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  7. The intensity of scattered light I in Ray leigh scattering is proporti...

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  8. What is the speed of light in a denser medium of polarising of polaris...

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  9. The resolving power of a microscope at 6000 Å is 10^(4). What is its r...

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  10. Deduce Snell's Law of refraction for a plane wave using Huygen's princ...

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  11. Why we use the objective lens of larger aperture to increase the resol...

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  12. Why can we not get diffraction pattern from a wide slit illuminated by...

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  13. What is polarisation ?

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  14. Name two commonly used polarisers used to polarises light.

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  15. Light waves can be polarised but sound waves cannot be. Why?

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  16. Can two independent source of light be coherent? Why ?

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  17. The headlights of a car polarised or unpolarised. Explain.

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  18. Which of the following waves can be polarized (i) Heat (ii) Sound wave...

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  19. If the angle between the pass axes of a polariser and analyser is 45^@...

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  20. For which angle of incidence reflected ray is completely polarised?

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