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A glass lens is coated on one side with ...

A glass lens is coated on one side with a thin film of magnesium fluoride `(MgF_(2))`to reduce reflection from the lens surface (Fig. 2.26). The Index of refraction of `MgF_(2)` is 1.38, that of the glass is 1.50. What is the least coating thickness that eliminates (via interference) the reflections at the middle of the visible specturm `(lambda = 550nm)`? Assume that the light is approxmately perpendicular to the lens surface.

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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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