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A beam of light consisting of two wavelengths, 650 nm and 520 nm, is used to obtain interference fringes in a Young experiment.- Find the distance of the third bright fringe on the screen from the central maximum for wavelength 650 nm.

A

`393.4 nm`

B

`442.5 nm`

C

`776.8 nm`

D

`885.0 nm`.

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MODERN PUBLICATION-UNIT TEST -06-EXERCISE
  1. In Young's double slit experiment what is the shape of interference fr...

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  2. In a Young's double slit experiment,the intensity at a point,where the...

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  3. A beam of light consisting of two wavelengths, 650 nm and 520 nm, is u...

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  4. Define coherent sources of light, fringe width and interference of lig...

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  5. The question has a paragraph followed by two statements, Statement 1 a...

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  6. If I0 is the intensity of the principal maximum in the singel slit dif...

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  7. Two point white dots are 1 mm apart on a black paper.They are viewed y...

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  8. Wavelength of light used in an opticla instrument are lambda1=4,000 ov...

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  9. This angle of incidence at which relfeted ligth is totally polarised f...

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  10. When an unpolarised light intensity I0 is incident on a polarising she...

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  11. Ray optics is valid,when characteristic dimenstions are

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  12. A person is six feet tall.How tall must a vertical mirror be,if he is ...

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  13. A beam of monochromatic light is refracted from vacuum into a medium o...

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  14. Green light of wavelegth5,460 overset @A is incident on an air-glass i...

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  15. The frequency of ligth in a material is 2 xx 10^(14) Hz and wavelength...

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  16. A ray of light travelling in air have wavelength lambda,frequency v,ve...

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  17. The refractive index of water is 1.33.What will be the speed of light ...

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  18. Light travels through a glass plate of thickness t and having a refrac...

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  19. If imuj represents refractive index,when a light ray goes from medium ...

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  20. The refractive index of air w.r.t. med 1 is 6//7.The refractive index ...

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