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:
After 5 half life the amount remains as 3.125 g
Explanation:
After each half life the quantity becomes half
so we know that initial amount is 100 g
so after 1st half life amount is half so it left as
m = 50 g
now after 2nd half life amount again becomes half
m = 25 g
after 3rd half life it is again half so remaining amount is
m = 12.5 g
after 4th half life the amount becomes half again
m = 6.25 g
Now after 5th half life the amount remains as
m = 3.125 g
Error is the difference between the true value of the measurand and the measured value.. Uncertainty characterizes the range of values within which the true value is asserted to lie with some level of confidence.
If that doesn’t help here’s the definition of both the terms,
Error:
A mistake
Uncertainty:
the state of being uncertain.