#### The number of photons of light with the wavelength of 4000 pm that provides 1 J of energy is Option 1) Option 2) Option 3) Option 4)

As learnt in

The energy (E) of a quantum of radiation -

Where h is plank’s constant and  is frequency

-

Thus,

Option 1)

This solution is correct.

Option 2)

This solution is incorrect.

Option 3)

This solution is incorrect.

Option 4)

This solution is incorrect.