If 730-nm and 640-nm light passes through two slits 0.63 mm apart, how far apart are...

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If 730-nm and 640-nm light passes through two slits 0.63 mm apart, how far apart are...

If 730-nm and 640-nm light passes through two slits 0.63 mm apart, how far apart are the second-order fringes for these two wavelengths on a screen 1.2 m away?

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Answer 1

Answer #1

We have relation for distance of second bright fringe from center fring

y_n=(D $\times$ n) $\times$ (2 $\lambda$ /d)

Here

y₂=2D $\lambda$ ₁/d (Taking n=2)

y_2,1= 2D $\lambda$ ₂/d

so separation is

y₂-y_2,1=(2D $\lambda$ ₁/d) - (2D $\lambda$ ₂/d)

= 2D ( $\lambda$ ₁- $\lambda$ ₂)/d

putting all vaules

= 2 $\times$ 1.2 (730 $\times$ 10^-9-640 $\times$ 10^-9)/(0.63 $\times$ 10^-3)

= 3.43 $\times$ 10^-4 m ANS

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Answer 2

Answer #1

We have relation for distance of second bright fringe from center fring

y_n=(D $\times$ n) $\times$ (2 $\lambda$ /d)

Here

y₂=2D $\lambda$ ₁/d (Taking n=2)

y_2,1= 2D $\lambda$ ₂/d

so separation is

y₂-y_2,1=(2D $\lambda$ ₁/d) - (2D $\lambda$ ₂/d)

= 2D ( $\lambda$ ₁- $\lambda$ ₂)/d

putting all vaules

= 2 $\times$ 1.2 (730 $\times$ 10^-9-640 $\times$ 10^-9)/(0.63 $\times$ 10^-3)

= 3.43 $\times$ 10^-4 m ANS

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Answer 3

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If 730-nm and 640-nm light passes through two slits 0.63 mm apart, how far apart are...

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Homework Answers

Add Answer to: If 730-nm and 640-nm light passes through two slits 0.63 mm apart, how far apart are...

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If 730-nm and 640-nm light passes through two slits 0.63 mm apart, how far apart are...