8
Homework solutions
•Question 8.  Of the following types of electromagnetic radiation, which has the lowest energy per photon?
 
a.gamma-rays  
•b.radio – lowest frequency, longest wavelength, lowest E  
•c.infrared radiation  
•d.visible light  
•e.x-rays  
•
•Question 9   (1 point)Compared to gamma rays, radio waves travel
 
a.slower (i.e., at the speed of sound).  
•b.At the same speed. !!!!!!!!!!!!!!!!!!  Both are light! 
• c.faster.