Cathode rays are streams of fast moving ...

Cathode rays are streams of fast moving regatively charged particles. Their speed range is (consider `c~~3xx10^(8)ms^(-1)`)

0.1 `c` to 0.2`c`

equal to `c`

greater than `c`

around `10^(-5)` `c` to `10^(-3)``c`

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The correct Answer is:

The particles speed ranges from 0.1 c to 0.2c. Here c is the speed of light in vacuum which is `3xx10^(8)ms^(-1)`

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