What is the energy of a photon of light having a wavelength of 4.5 x 10-7 meters? (planck’s constant is 6.626 x 10-34 joule seconds; the speed of light is 2.998 x 108 m/s)

4.4x10⁻¹⁹ J

Explanation:

The energy of a photon is given by the equation:

Where h is Planck's constant, c is the speed of light and λ is the wavelength.

Putting the data given by the problem we're left with.

So the answer is 4.4x10⁻¹⁹ J.

it is b that is the answer.