Question

Stud 11. A 200 W bulb emits monochromatic ligh wavelength 1400 Å and only 10% of the enero emitted as light. The number of photons em by the bulb per second will be (2) 1.4 x 1020 (1) 1.4 * 1018 (4) 1.4 x 1021 (3) 1.4 x 1019​

Answer 1

I HOPE IT WILL HELP YOU MARK AS BRAINEST