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33. A plane parallel oil film (mu=1.4) floating on water is il

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33. A plane parallel oil film $(m u = 1.4)$ floating on water is illuminated by white light at normal incidence. If the thickness of film is $300 nm$ the most reflected wavelength will be :- (1) $4400 AA$ (2) $6400 AA$ (3) $5600 AA$ (4) $7200 AA$

Name: Video solution 1: 33. A plane parallel oil film (mu=1.4) floating on water is illuminated by white light at normal incidence. If the thickness of film is 300 nm the most reflected wavelength will be :- (1) 4400AA (2) 6400AA (3) 5600AA (4) 7200AA
Uploaded: 2023-06-05T08:26:04.000Z
Duration: 4 min
Description: Video solution 1: 33. A plane parallel oil film (mu=1.4) floating on water is illuminated by white light at normal incidence. If the thickness of film is 300 nm the most reflected wavelength will be :- (1) 4400AA (2) 6400AA (3) 5600AA (4) 7200AA

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Updated on: Jun 5, 2023

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Levi Discussed

33. A plane parallel oil film

(m u = 1.4)

floating on water is illuminated by white light at normal incidence. If the thickness of film is

300 nm

the most reflected wavelength will be :- (1)

4400 AA

(2)

6400 AA

(3)

5600 AA

(4)

7200 AA

11 mins ago

Discuss this question LIVE

11 mins ago

Text solutionVerified

For bright Fringe width

2 μ t cos r = (2 n + 1) \frac{λ}{2}

2 \times 1.4 \times 300 \times 1 0^{- 9} = (2 \times 1 + 2) \frac{λ}{2}

λ = \frac{2 \times 2 \times 1.4 \times 300 \times 1 0 ^{- 9}}{3} = 5600 \overset{˚}{A}

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Question Text	33. A plane parallel oil film $(m u = 1.4)$ floating on water is illuminated by white light at normal incidence. If the thickness of film is $300 nm$ the most reflected wavelength will be :- (1) $4400 AA$ (2) $6400 AA$ (3) $5600 AA$ (4) $7200 AA$
Updated On	Jun 5, 2023
Topic	Atoms, Nuclei & Dual nature
Subject	Physics
Class	Class 11
Answer Type	Text solution:1 Video solution: 1
Upvotes	87
Avg. Video Duration	4 min

33. A plane parallel oil film $(m u = 1.4)$ floating on water is illuminated by white light at normal incidence. If the thickness of film is $300 nm$ the most reflected wavelength will be :- (1) $4400 AA$ (2) $6400 AA$ (3) $5600 AA$ (4) $7200 AA$

Text solutionVerified

Filo tutor solutions (1)

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