A bulb emits light  of wavelength `4500Å` .The bilb  is nrated as `150` and `8%`  of the
Channel: Doubtnut
Date: 2020-07-26

A bulb emits light  of wavelength `4500Å` .The bilb  is nrated as `150` and `8%`  of the energy is emmitted as light .How  amny  photon are  emitted by the bulb per second?