Question

When a light paddle wheel is placed in the path of cathode rays it starts rotating. It means:

(1) Cathode rays travel in straight line

(2) Cathode rays are negatively charged

(3) Cathode rays consist of matter particles and possess kinetic energy

(4) None of these​

Answer 1

Answer:

A light paddle will rotate when it is placed in the path of α,βor cathod rays. Because these particles move with a velocity. When they strike the light paddle wheels blades the momentum is shared and it starts rotating.

(plz search the answer from above paragraph)