Light Problem: Δλ of Monochromatic Light @ 600 nm

[getcarter]

Homework Statement

Monochromatic light with λ=600 nm passes through a fast shutter that opens for 10-9 s. What is the approximate spread of of wavelengths Δλ of the light after it has passed through the shutter?

 

[getcarter]

10-9 s = 10 nano s. sorry for this mistake.

 

[cristo]

What have you done thus far?

 

[Meir Achuz]

Use d\omega X dt~1.

 

[getcarter]

i tried like u d/omega x but i couldn't reach a correct solution... :(