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Introduction to Atomic Structure

Which of the ...

Question

Which of the following statements is not true with respect to cathode rays?

A

They are a stream of electrons

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B

They are charged particles

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C

They move with same speed as that of light

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D

They can be deflected by electric field

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Solution

The correct option is C They move with same speed as that of light
Cathode rays are a stream of electrons observed in discharged tubes (vaccum tubes). Also, they can be deflected due to presence of an electric field.
Cathode rays are negatively charged. They do not move with the speed of light since they are not electromagnetic waves.

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