A ruby laser produces radiations of wavelength 662.6 nm in pulses whose duration are 1.0 × 10^-9 s. — Atomic Structure Chemistry Question
Question
A ruby laser produces radiations of wavelength 662.6 nm in pulses whose duration are 1.0 × 10^-9 s. If the laser produces 0.36 J of energy per pulse, how many photons are produced in each pulse?
Answer: C
💡 Solution & Explanation
E per photon = hc/λ = 3.0 × 10^-19 J. N = 0.36 / (3.0 × 10^-19) = 1.2 × 10^18 photons/pulse.
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