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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

a)

b)

c)

d)


Question ID - 150013 | Top Ranker Answer | SaraNextGen

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

a)

b)

c)

d)

1 Answer - 5876 Votes

3537

Answer Key : (a) -

(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



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