NCERT Example 11.1 - Dual Nature of Radiation and Matter
Question: Monochromatic light of frequency 6.0 × 10¹⁴ Hz is produced by a laser. Power emitted is 2.0 × 10⁻³ W. (a) Energy of each photon? (b) Number of photons emitted per second?
Answer: (a) **3.98 × 10⁻¹⁹ J**; (b) **about 5.0 × 10¹⁵ photons/s**.
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