Answer:
v = 9.824 x 10³ m/s
Explanation:
given,
Linear momentum of photon,λ = 740 n m
for photon,
[tex]p=\dfrac{h}{\lambda}[/tex]
h is the planks constant
P is the momentum
[tex]p=\dfrac{6.626\times 10^{-34}}{740\times 10^{-10}}[/tex]
p = 8.95 x 10⁻²⁷ kg.m/s
For electron
p = m v
mass of electron = 9.11 x 10⁻³¹ Kg
[tex]v = \dfrac{8.95\times 10^{-27}}{9.11\times 10^{-31}}[/tex]
v = 9.824 x 10³ m/s
hence, the velocity of electron is equal to v = 9.824 x 10³ m/s
