A sheet of cellophane acts as a half-wave plate for light of wavelength 4000Å. If the index of refraction did not change with wavelength, how would the sheet behave with respect to light of wavelength 8000Å?
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A soap flim of thickness `0.3 mu m` appears dark when seen by the refracted light of wavelength `580 nm`. What is the index of refraction of the soap
Correct Answer - 1.45 The path difference is `2mu t`. Now for destructive interface it can be `2mut=(lambda)/(2)` or `(3lambda)/(2)` or `(5lambda)/(2)` and so on……… `mu=(lambda)/(4 t),(3lambda)/(4 t),(5lambda)/(4 t)……..` `=(580xx10^(-9))/(4xx0.3xx10^(-6)) ,...
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An infinite sheet in xy plane has a uniform surface charge density `sigma`. The thickness of the sheet is infinitesimally small. The sheet begins to m
Correct Answer - (1) `E=sigma/(2in_(0))` perpendiculary away from the sheet `B=(mu_(0)sigmav)/2` parallel to the sheet in `-ve` and `+ve` y direction (2) E= same as in (1);`B=0`
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Calculate the thickness of a quartz quarter- wave plate for sodium light `(lambda=5893Å)` given that the index of refraction of quartz for ordinary an
Correct Answer - `1.62xx10^(-5)`m
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You have to design a half-wave plate of quartz crystal for light of wavelength 5800Å. Calculate the thickness of the plate rquired for the purpose if
Correct Answer - `3.2xx10^(-5)`m
2 Answers 1 views
A parallel - plate capacitor of plate area `A` and plate separation d is charged to a potential difference `V` and then the battery is disconnected .
Correct Answer - decrease in energy is `(1)/(2)(epsilon_(0)AV^(2))/(d)((epsilon_(r)-1)/(epsilon_(r)));` energy is transferred to the agent introducing the slab
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A parallel-plate capacitor contains a mica sheet (thickness `10^(-3)`m) and a sheet of fibre (thickness `0.5xx10^(-3)`m). The dielectric constant of m
Correct Answer - `5200 V`
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Find the thickness of a plate which will produce a change in opticle path equal to half the wavelength `lambda` of the light passing through it normal
Correct Answer - `(lambda)/(2(mu-1))`
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A quartz plate is a half wve plate for light whose wave length. Is `lambda`. Assuming that the variations is the indices of refraction with wavelength
Correct Answer - Plane will behave as a quarter wave plate for wavelength `lambda`
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(a) `[Ti(H_(2)O)_(6)]^(3+)` absorbs light of wavelength 5000Å. Name one ligand which would form a titanium (III) complex absorbing light to lower wave
Correct Answer - (a) `CN^(-),F^(-)` (b) (i) 0 (ii)0 (iii)0 (iv)0
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