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Question: 

Light of wavelength 470 nm in air shines on two slits $6.00 \times 10^{-2} \textrm{ mm}$ apart. The slits are immersed in water, as is a viewing screen 40.0 cm away. How far apart are the fringes on the screen?

Source: Giancoli, Douglas C., Physics: Principles with Applications, 7th Edition, 2014.

Quick Answer: 

2.4 mm

Giancoli 7th Edition, Chapter 24, Problem 16

(2:17)

Chapter 24, Problem 16 is solved.

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