Question Detail
Question
Which of the following is NOT a property of cathode rays as described in the text?
Correct Answer
Option D is the correct answer.
Detailed Explanation
The text explicitly states under 'Properties of cathode rays': 'they are negatively charged,' 'they travel in a straight route,' and 'they ionise the gas inside the tube.' Therefore, being positively charged is not a property.
Hint
Recall the basic charge of electrons, which constitute cathode rays.