E10Q1 The second order principal maximum formed by a diffration grating having 500 lines/mm is observed...

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E10Q1 The second order principal maximum formed by a diffration grating having 500 lines/mm is observed...

E10Q1

The second order principal maximum formed by a diffration grating having 500 lines/mm is observed at an angle of theta = 41.4 degrees. What is the wavelength of the light used?

The wavelength lambda is =? nm

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Answer 1

Answer #1

iwen c?

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Answer 2

Answer #2

? = sin? /mn = sin 41.4/2*500000 = 0.6613 /1000000 = 661 nm

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Answer 3

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