A blue lamp mainly emits light of wavelength 4500 Å. The lamp is rated at 150 W and 8% of…
Physics · Class 12 · CBSE — Dual Nature of Radiation & Matter
A blue lamp mainly emits light of wavelength 4500 Å. The lamp is rated at 150 W and 8% of the energy is emitted as visible light. The number of photons emitted by the lamp per second is
- 3 × 1019
- 3 × 1024
- 3 × 1020
- 3 × 1018
Answer
(A) 3 × 10 19
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