Intense white light is incident on a diffraction grating that has 672 lines/mm.(a) What is the highest order in which the complete visible spectrum can be seen with this grating? (Enter 1 for first order, 2 for second order, etc.)- User's Answer: 2.126 - Result: Incorrect(b) What is the angular separation between the violet edge (400 nm) and the red edge (700 nm) of the first-order spectrum produced by the grating?- User's Answer: 13°- Result: Incorrect

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