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Light is incident on glass plate (μ = 1.5) such that angle of refraction is 60°. Dark Band is observed corrosponding to the wavelength 6000Å for reflected light. If the thickness of glass plate is 1.2 × 10 –3 mm. calculate the order of the interference band :- Options 1. 2 2. 3 3. 4 4. 5 answer option 3

Light is incident on glass plate (μ = 1.5) such that angle of refraction is 60°. Dark Band is observed corrosponding to the wavelength 6000Å for reflected light. If the thickness of glass plate is 1.2 × 10–3 mm. calculate the order of the interference band :-
Options
1.  2
2.  3
3.  4
4.  5         answer option 3

Grade:

1 Answers

Parth Verma
49 Points
4 years ago
This is the case of thin film interference .Apply the formula-2μtcosr - y/2 = NY, where y = wavelength.Thanks................

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