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What is the effect on the interference fringes in Young's double slit experiment when the monochromatic source is replaced by a source of white light?

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In Young's double-slit experiment, monochromatic light of wavelength 630 nm illuminates the pair of slits prodcues an interference pattern in which two consecutive bright fringes are separated by 8.1 mm. Another source of monochromatic light produces the interference pattern in which the two consecutive bright fringes are separated by 7.2 mm. Find the wavelength of light for the second source. What is the effect on the interference fringes if the monochromatic source is replaced by a source of white light?

If white light is used in a Young's double slit experiment,

MODERN PUBLICATION-WAVE OPTICAL-Revision Exercises (Very Short Answer Questions)
  1. What wil be the effect on the fringes, if Young's double slit experime...

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  2. What will be the ratio of slit widths if the amplitudes of the light w...

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  3. What is the effect on the interference fringes in Young's double slit ...

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  4. What are coherent sources ? Define interfernece of light. Obtain the c...

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  5. What are coherent sources of light ? Why nointerference pattern is ob...

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  6. State the postulates of Huygens' wave theory.

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  7. What is the condition for diffraction to take place ?

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  8. Why diffraction is better experienced in sound waves than in light wav...

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  9. What will be the effect on the width of the central maxima if the slit...

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  10. Why light waves cannot show diffracton around hills and tall buildings...

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  11. How does the angular separation between frings in single-slit diffract...

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  12. State one defect of Huygens's wave theory.

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

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

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

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

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  17. Define resolving power of an optical instrument.

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

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

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

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