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?

Question

Prashant Kotian · Accepted Answer

Correct answer: C. E per photon = hc/λ = 3.0 × 10^-19 J. N = 0.36 / (3.0 × 10^-19) = 1.2 × 10^18 photons/pulse.

💡 Solution & Explanation

Practice 22,000+ questions like this