CATHODE RAYS CAUSES AN OBJECT PLACED BEHIND A PERFORATED ANODE TO CAST A SHADOW ON THE SCREEN. THIS OBSERVATION SHOWS THAT THE RAYS
A. are positively charged B. are negatively charged C. have mass D. travel in straight lines ✓ The answer to the question is: D. travel in straight lines The observation that cathode rays cause an object placed behind a perforated anode to cast a…