What can you conclude about this unknown particle?

Question

An unknown particle is sent through the apparatus. Its path is deflected in the opposite direction from the negatively charged particle, and it is deflected by a smaller magnitude.

select all that apply

The particle has less mass than the electron.

The particle is a positron.

The particle is positively charged.

The particle has greater mass than the electron.

The particle is negatively charged.

Answer 1

It seems like there should be more to the question.  I need to make the assumption that an electron was sent through the same apparatus and we are making conclusions based on the differences in paths.

Since the unknown particle deflected in the opposite direction, you can conclude that it has the opposite charge (The particle is positively charged).

If you also know that the speeds of the particles going into the device was the same, then the fact that it was deflected by a smaller amount matters and you can conclude that the particle has a greater mass.  If you don't know speeds, then I would say you can't make that conclusion since a smaller deflection could mean that the particles could have the same mass, but the unknown particle was moving faster and thus deflected less.

Answer 2

I'd say

"The particle is positively charged."

Answer 3

None of these above

Answer 4

Only one definitely applies. One definitly is false. The rest may or may not be true.