Please help me with this question. Light of wavelength 590 nm and light of unkno

Question

Please help me with this question.
Light of wavelength 590 nm and light of unknown wavelengthboth pass through two narrow slits 0.600 mm apart. The screen is1.70 m away. On the screen the second-order bright fringe of theunknown-wavelength light is 1.33 mm closer to the central maximumthan the second-order bright fringe of the 590-nm light.
What is the unknown wavelength?
Light of wavelength 590 nm and light of unknown wavelengthboth pass through two narrow slits 0.600 mm apart. The screen is1.70 m away. On the screen the second-order bright fringe of theunknown-wavelength light is 1.33 mm closer to the central maximumthan the second-order bright fringe of the 590-nm light.
What is the unknown wavelength?

Explanation / Answer

= 590 nm, d = 0.600 mm, L = 1.70 m, x = 1.33 mm, find' x = x2 - x2' = 2L/d - 2L'/d= 2L( - ')/d ' = - dx/(2L) = 355 nm

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