A 17 mm wide diffraction grating has rulings of 530 lines per mm. ...

[berenicecastro]

A 17 mm wide diffraction grating has rulings of 530 lines per mm. Light is incident normally on the grating. The longest wavelength that forms an intensity maximum in the fifth order is closest to:
 
  A) 377 nm
  B) 352 nm
  C) 402 nm
  D) 427 nm
  E) 452 nm

Question 2

What is the greatest magnitude of the orbital angular momentum L for an electron in a state with principal quantum number n = 5?
 
  A) 4.47
  B) 4.90
  C) 5
  D) 5.48

[katara]

Answer to Question 1

A

Answer to Question 2

A