Answer:
I would choose false but that might be the wrong answer
It is because of static electricity
Beta particles are electrons, which carry negative charge.
Charge isn't affected by magnets, unless it's moving. If it's moving, THEN it's electric current, and current feels a force toward or away from magnets.
This question doesn't say whether the beta particles are moving, so we have to assume that they're just laying there, and they don't even know that there's a magnet nearby.
So beta particles will not be affected by either pole of a magnet. <em>(C)</em>
Answer
Maximum speed at 75 m radius will be 22.625 m /sec
Explanation:
We have given radius of the curve r = 150 m
Maximum speed
Coefficient of friction
Now new radius r = 75 m
So maximum speed at new radius