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Angular width of central maximum in the ...

Angular width of central maximum in the Fraunhoffer diffraction pattern of a slit is measured. The slit is illuminated by light of wavelength `6000Å`. When the slit is illuminated by light of another wavelength, the angular width decreases by `30%`. Calculate the wavelength of this light. The same decrease in the angular width of central maximum is obtained when the original apparatus is immersed in a liquid. Find the refractive index of the liquid.

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PHYSICS GALAXY - ASHISH ARORA-WAVE OPTICS-Unsolved Numerical Problems
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  2. A prism having angle A^(@) (which is very small) is placed in front of...

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  3. A thin glass plate of thickness t and refractive index mu is inserted ...

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  4. A double slit arrangement produces fringes for light lambda=5890Å whic...

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  5. Two coherent narrow slits emitting light of wavelength lambda in the s...

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  6. In Young's double-slit experiment, the slit are 0.5 mm apart and the i...

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  7. Light of wavelength 520nm passing through a double slit,produced inter...

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  8. The distance between two slits in a YDSE apparatus is 3mm. The distanc...

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  9. One radio transmitter A operating 60.0MHzis 10.0from another similar t...

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  10. The central fringe of the interference pattern produced by the light o...

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  11. A broad sources of light of wavelength 680nm illuminated normally two ...

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  12. Two microwave coherent point sources emitting waves of wavelenths lamb...

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  13. In a YDSE two thin transparent sheet are used in front of the slits S(...

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  14. In a two slit experiment with monochromatic light fringes are obtained...

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  15. A source S is kept directly behind the slit S(1) in a double slit appa...

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  16. In a YDSE a parallel beam of light of wavelength 6000Å is incident on ...

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  17. A plastic film with index of refraction 1.80 is put on the surface of ...

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  18. Two coherent monochromatic sources A and B emit light of wavelength la...

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  19. A beam of light consisting of two wavelength, 6500 Å and 5200 Å is use...

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  20. In an experiment using Fresnel biprism, fringes of width 0.185 xx 10^(...

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  21. Two identical monochromaticlight sources A & B intensity 10^(-15)W//m^...

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