Find the angular deviation of the third order image

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Reference no: EM1311776

Q1 . Light of wavelength 540 nm is diffracted by a grating ruled with 1000 lines/cm. There are a total of 2000 lines in the grating. Find the angular deviation of the third order image.

3.8°
9.3°
12.1°
18.9°
none of above

Q 2. What is the maximum order which could be observed from the grating and light source in (2)? Choose the closest.

6th
9th
12th
15th
18th

Reference no: EM1311776

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