CUET Preparation Today
CUET
Physics
Dual Nature of Radiation and Matter
a
b
c
d
$ N = \frac{P\lambda}{hc} = \frac{2\times 10^{-3}\times 5 \times 10^{-7}}{6.62\times 10^{-34}\times 3\times 10^8} = 5\times 10^{15}$
