This document contains multiple choice questions about light, wavelengths, and energy. Question 2a asks about the wavelengths of 4G and 5G signals, with answers in centimeters and meters. Question 2b asks about comparing the energy of one mole of photons from 4G and 5G signals, with answers in Joules per mole. Question 3 asks about the energy of a photon of emitted light. Question 4 asks about the wavelength of a neutron, with answers in nanometers.

1. Week 8 - Light
Clicker Q’s
2a. What are the wavelengths for each signal? (4G and 5G respectively)
a. 0.34 cm, 0.012 cm
b. 2.64E11 cm, 7.50E9 cm
c. 34 cm, 1.2 cm
d. 2.64E13 cm, 7.50E11cm
2b. Compare the energy of one mole of photons from each signal (4G and 5G respectively).
a. 5.8E-25 J/mol, 1.6E-23 J/mol
b. 3.5E-1 J/mol, 1.0E1 J/mol
3. What is the energy of the photon of light emitted?
a. -4.58E-19 J
b. +4.58E-19 J
c. -6.54E-19 J
d. +6.54E-19 J
4. What is the wavelength of the neutron?
a. 1.7 nm
b. 1.7E-9 nm