If mean wavelength of light radiated by 100 W lamp is 5000 Ao, then number of photons radiated per second are

see full answer

Start JEE / NEET / Foundation preparation at rupees 99/day !!

21% of IItians & 23% of AIIMS delhi doctors are from Sri Chaitanya institute !!

An Intiative by Sri Chaitanya

3×1023

2.5×1022

2.5×1020

5×1017

answer is C.

(Unlock A.I Detailed Solution for FREE)

Ready to Test Your Skills?

Check your Performance Today with our Free Mock Test used by Toppers!

Take Free Test

Detailed Solution

P=nhcλt⇒nt=P.λhc=100×5000×10−106.6×10−34×3×108=2.50×1020

Watch 3-min video & get full concept clarity