Answer:
1.
-Deflection force
2.q-Charge
3.v-Velocity of the charge
4.B-Perpendicular magnetic field strength
Step-by-step explanation:
We are given that magnetic deflection
![F_m=qvB](https://img.qammunity.org/2021/formulas/physics/high-school/e8fbz8j0lv46clmob5kpyx9johf646otzq.png)
We have to match each symbol in formula with what it represents.
In this formula
Deflection force
q=Charge of particle
v=Velocity of charge
B=Perpendicular magnetic field strength
Therefore,
1.
-Deflection force
2.q-Charge
3.v-Velocity of the charge
4.B-Perpendicular magnetic field strength