How many photons are produced in a laser pulse of 0.497 j at 469 nm?

photons are produced in a laser pulse of 0.497 Joules at 469 nm.

Explanation:

Energy of the laser pulse ,E'= 0.497 J

Number of photons = n

Energy of 1 photon with 469 nm wavelength = E

E' = n × E

h = Planck's constant =

c = speed of light =

= wavelength =

Now put all the given values in the above formula, we get the energy of the photons.

photons are produced in a laser pulse of 0.497 Joules at 469 nm.