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White light may be considered to be mixt...

White light may be considered to be mixture of waves of `lambda` ranging between `3900 Å` and `7800 Å`. An oil film of thickness `10,000 Å` is examined normally by the reflected light. If `mu=1.4`, then the film appears bright for

A

`4308 Å, 5091 Å, 6222 Å`

B

` 4000 Å, 5091 Å, 5600 Å`

C

`4667 Å, 6222 Å, 7000 Å`

D

`4000 Å, 4667 Å, 5600 Å, 7000Å`

Text Solution

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The correct Answer is:
A
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