A bulb emits light of ` 4500 Å `. The bulb is rated as ` 150` watt and ` 9 %` of the energy is
Channel: Doubtnut
Date: 2020-08-02

A bulb emits light of ` 4500 Å `. The bulb is rated as ` 150` watt and ` 9 %` of the energy is emited as light . How many photons are emitted by the bulb per second ?