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Single Slit problems

  • #1

Homework Statement


At what angle will 750nm light produce a second minimum if the single-slit width is 2.0um

Homework Equations


Sin(theta)=n(lambda)/w

The Attempt at a Solution


This is what I got so far
(theta)=sin-1(3x10^-6/2x10^-6)

I dont understand why I keep getting error on my calculator, what am I doing wrong here please help
 

Answers and Replies

  • #2

Homework Statement


At what angle will 750nm light produce a second minimum if the single-slit width is 2.0um

Homework Equations


Sin(theta)=n(lambda)/w

The Attempt at a Solution


This is what I got so far
(theta)=sin-1(3x10^-6/2x10^-6)
the answer btw is 49degrees
 
  • #3
haruspex
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I dont understand why I keep getting error on my calculator
It's because you are asking for an angle with sin > 1.
Where do you get 3x10^-6 from?
 

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