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Question: 

Coherent light from a laser diode is emitted through a rectangular area $3.0 \; \mu \textrm{m} \times 1.5 \; \mu \textrm{m}$ (horizontal-byvertical). If the laser light has a wavelength of 780 nm, determine the angle between the first diffraction minima

  1. above and below the central maximum,
  2. to the left and right of the central maximum.

Source: Giancoli, Douglas C., Physics: Principles with Applications, 7th Edition, 2014.

Quick Answer: 
  1. $63^\circ$
  2. $30^\circ$

Giancoli 7th Edition, Chapter 24, Problem 30

(3:13)

Chapter 24, Problem 30 is solved.

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