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What should be the nature of the inciden...

What should be the nature of the incident wavefront in case of Fresnel's diffraction?

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spherical or cylindrical
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CHHAYA PUBLICATION-DIFFRACTION AND POLARISATION OF LIGHT-EXERCISE (VERY SHORT ANSWER TYPE QUESTIONS)
  1. Intensity of all fringes in diffraction pattern are [Fill in the blan...

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  2. What is the phenomenon of diffraction more pronounced in single slit?

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  3. What should be the nature of the incident wavefront in case of Fresnel...

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  4. Small spherical obstacle producesdiffraction [Fill in the blank].

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  5. A single slit produces diffraction [Fill in the blank.]

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  6. In Fresnel's diffraction, source of light is located at distance from ...

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  7. If the wavelength of the incident light in a single slit is increased,...

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  8. In a single slit diffraction, the intensity of secondary maxima gradua...

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  9. Resolving power of a telescopewith the increase of the diameter of its...

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  10. How does the angular width of central maximum change when the slit wid...

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  11. Instead of violet light if red light is used in the formation of diffr...

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  12. In a single slit diffraction, what is the condition for formation of f...

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  13. In a single slit diffraction, what is the condition for formation of f...

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  14. In a single slit diffraction, what is the expression of linear width o...

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  15. What is called the power of an optical instrument to produce distinctl...

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  16. What does polarisation of light prove about the nature of light?

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  17. Why does ultrasonic wave not exhibit polarisation?

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  18. When light is polarised, how does its intensity change?

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  19. Sunray, sodium light, head light of an automobile- which of these ligh...

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  20. What is the angle of between the plane of polarisation and the directi...

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