White light may be considered to be a mixture of waves with ranging between and . An oil film of thickness is examined normally by reflected light. If , then the film appears bright for |
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a) |
b) |
c) |
d) |
White light may be considered to be a mixture of waves with ranging between and . An oil film of thickness is examined normally by reflected light. If , then the film appears bright for |
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a) |
b) |
c) |
d) |
(a) The film appears bright when the path difference is equal to odd multiple of where The wavelength which are not within specified range are to be refracted |