Question

Which of the following statements is incorrect regarding cathode rays?

• A. They produce X-rays when they strike a metal
• B. They ionize the gas which they pass through
• C. Cathode rays contains the smallest unit of negative charge
• D. None of the above

Answer 1

The correct option is D None of the above

Cathode rays are emitted from the negative terminal of the elctrode and travel in a straight line in the absence of electric and magnetic fields. Cathode rays when struck on a metal emit X-rays and on passing through a gas they ionize the gaseous atoms and emit more electrons.