Answer:
<em>D. Velocity</em>
Explanation:
<u>Energy Dimensional Analysis</u>
The kinetic energy (K) can be calculated by the formula:
Where:
m = mass of the object
v = speed at which the object moves
Solving for v:
Or, equivalently:
In dimensional terms, the quotient of the square roots of the energy and the mass is equivalent to the dimensions of the velocity (or speed),
D. Velocity
Explanation:
It is given that,
Speed of the electron in horizontal region,
Vertical force,
Vertical acceleration,
..........(1)
Let t is the time taken by the electron, such that,
...........(2)
Let is the vertical distance deflected during this time. It can be calculated using second equation of motion:
u = 0
So, the vertical distance the electron is deflected during the time is 0.426 mm. Hence, this is the required solution.