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Two slits are made one millimeter apart and the screen is placed one metre away. When blue-green light of wavelength 500 nm is used, the fringe separation is

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Fringe spacing `=(Dlambda)/(d)=(1xx5xx10^(-7))/(1xx10^(-3))m`
`=5xx10^(-4)m=0.5nm`
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NCERT-WAVE OPTICS -Exercise
  1. Two slits are made one millimeter apart and the screen is placed one m...

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  2. Monochromatic light of wvalength 589 nm is incident from air on a wate...

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  3. What is the shape of the wavefront in each of the following cases ? ...

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  4. (a) The refractive index of glass is 1.5. What is the speed of light i...

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  5. In a Young's double-slit experiment , the slits are separated by 0.28 ...

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  6. In Young's double slit experiment using monochromatic light of wavelen...

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  7. A beam of light consisting of two wavelengths 650 nm and 520 nm, is us...

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  8. In a double slit experiment the angular width of a fringe is found to ...

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  9. What is Brewster angle for air to glass transtion ? (mu of glass is 1....

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  10. Light of wavelength 5000Å falls on a plane reflecting surface. What ar...

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  11. Estimate the distance for which ray optics is good approximation for a...

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  12. The 6563 Å H(2) line emitted by hydrogen in a star is found to be red ...

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  13. Explain how Corpuscular theory predicts the speed of light in a medium...

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  14. You have learnt in the text how Huygens’ principle leads to the laws o...

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  15. Let us list some of the factors which could possibly influence the spe...

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  16. For sound waves, the Doppler's formula for frequency shift differs sli...

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  17. In double slit experiment using light of wavelength 600 nm, the angula...

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  18. Answer the following questions (a) In a single slit diffraction expe...

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  19. Two towers on the top of two hills are 40 km apart. The line joining ...

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  20. A parallel beam of light of wavelength 500 nm falls on a narrow slit ...

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  21. Answer the following questions : (a) When a low flying aircraft pass...

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