Question R1 Q16 - NSB Round Robin 2020

Laser A has a wavelength of 400 nanometers, and laser B has a wavelength of 800 nanometers. Which of the following is NOT true?

W) Light from laser A is blue, and light from laser B is near infrared

X) Photons from laser A have half the energy of those from laser B

Y) Light from laser A has twice the frequency of laser B

Z) Light from lasers A and B travel at the same speed in vacuum

Science Bowl Question