Q 1.14: Figure shows tracks of three charged particles in a uniform electrostatic field. Give the signs of the three charges. Which particle has the highest charge to mass ratio?
Charges 1 and 2 are repelled by the negatively charged plate of the system
Hence 1 and 2 are negatively charged.
Similarly, 3 being repelled by positive plate is positively charged.
(Charge to mass ratio: Charge per unit mass)
Since, 3 is deflected the most, it has the highest charge to mass ratio.