- #1

hidemi

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- Homework Statement
- The width of single slit slowly reduced. As a result?

- Relevant Equations
- a*sinθ = mλ

Monochromatic light is normally incident on a diffraction grating. The mth order line is at an angle of diffraction angle θ and has width w. A wide single slit is now placed in front of the grating and its width is then slowly reduced. As a result:

A. both θ and w increase

B. both θ and w decrease

C. θ remains the same and w increases

D. θ remains the same and w decreases

E. θ decreases and w increases

Ans: C

I think I can use the equation above but I don't know where to start.

Thanks

A. both θ and w increase

B. both θ and w decrease

C. θ remains the same and w increases

D. θ remains the same and w decreases

E. θ decreases and w increases

Ans: C

I think I can use the equation above but I don't know where to start.

Thanks

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