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Energy time uncertainity principle and spread of wavelength

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Part 1
Monochromatic light of wavelength 683 nm passes through a fast shutter that opens for 2 × 10 ^−10 s. The light that emerges will no longer be monochromatic. Planck's constant is 6.63 × 10 ^−34 J · s.
What will be the spread in wavelengths?
Answer in units of pm.

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Solution Summary

I have used energy-time uncertainty principle to find the spread of wavelength of a monochromatic light which emerges from a shutter which opens and shuts at a fast pace. Solution is easy to understand and every step is clearly written.

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