Quiz 5

What is the frequency of a laser with a wavelength of 640.0 nm?

• 468750

• 6.688x10¹⁴

• 6.40 x10^-7

• None of the above

Visible light is a form of electromagnetic radiation

• True

• False

Ultraviolet light has a lower frequency than visible light.

• True

• False

X-rays travel faster than microwaves.

• True

• False

The frequency of radiation increases as the wavelength increases.

• True

• False

Calculate the energy of a photon of radiation whose wavelength is 322nm.

• 6.17x10^-19J

• 2.13x10^-31J

• 6.17x10^-28J

• None of the above

What wavelength (in nm) of radiation has photons of energy 2.87x10^-18 J

• 69.28

• 6.928x10^-8

• 4.33x10¹⁵

• All of the above

Calculate the energy of an electron in the hydrogen atom when n = 2

(R_H= 2.179 x 10^-18 J)

A Bohr hydrogen atom undergoes a transition from n = 2 to n = 6. What is ∆E of the electron?

Calculate the wavelength (in nm) of the radiation for the above transition