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Problem

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Textbook Expert
Textbook ExpertVerified Tutor
24 Nov 2021

Given information

wavelength λ = 450 nm

Step-by-step explanation

Step 1.
Glass will appear bright when constructive interference will takes place
Condition of constructive interference
   
for minimum thickness m = 1
minimum thickness is given as
 
..........(1)
Substitute value of  lambda in equation (1)
 
 
 
Thickness of the air layer be between two flat glass surfaces if the glass appeared bright when 450-nm light is incident normally is

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