At what angle for the first - order diffraction, spacing between two planes respectively is `lambda and (lambda)/(2)`?A. `0^(@),90^(@)`B. `90^(@),0^(@)`C. `30^(@),90^(@)`D. `90^(@),30^(@)`

At what angle for the first - order diffraction, spacing between two p

1.	At what angle for the first - order diffraction, spacing between two planes respectively is `lambda and (lambda)/(2)`?A. `0^(@),90^(@)`B. `90^(@),0^(@)`C. `30^(@),90^(@)`D. `90^(@),30^(@)`
Answer» Correct Answer - 3 `nlambda-2d sin theta`

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At what angle for the first - order diffraction, spacing between two planes respectively is `lambda and (lambda)/(2)`?A. `0^(@),90^(@)`B. `90^(@),0^(@)`C. `30^(@),90^(@)`D. `90^(@),30^(@)`

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