A Laser Produces a Beam of 4000-Nm Light

question 4

Multiple Choice

A laser produces a beam of 4000-nm light.A shutter allows a pulse of light,30 ps in duration,to pass.Which of the following is closest to the uncertainty in the energy of a photon in the pulse? ( h = 1.055 × 10^-34 J • s = 6.59 × 10^-16 eV • s)

• A) 10^-6 eV
• B) 10^-5 eV
• C) 10^-4 eV
• D) 10^-3 eV
• E) 10^-2 eV

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