Question

Critical Thinking A photon of light with a wavelength of 550.0 nm is involved in a collision with an electron. Use 6.63×10m²kg/s for Planck’s constant. (a) How much momentum does the photon have before the collision?

a) 1.20 × 10⁻²⁷ kg·m/s
b) 1.20 × 10⁻²⁷ kg·m/s
c) 1.20 × 10⁻²⁷ kg·m/s
d) 1.20 × 10⁻²⁷ kg·m/s

Answer 1

The momentum of a photon with a wavelength of 550.0 nm is 1.20 × 10^-17 kg·m/s.

Step-by-step explanation:

To find the momentum of a photon, we can use the formula p = h/λ, where p is the momentum, h is Planck's constant, and λ is the wavelength of the photon.

Using the given values, we have:

p = (6.63 × 10⁻¹⁲ kg⋅m/s) / (550.0 × 10⁻¹⁹ m)

Simplifying this expression gives us the value for momentum as 1.20 × 10⁻¹⁷ kg⋅m/s.