Now consider a wave which is paired with seven other waves into seven pairs. The two waves in each pairing are identical, except
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Answer:
Velocity of the electron mid way = v = 6.47×10⁶ m/s
Explanation:
Electric potential varies with distance as
At a distance 5 mm , the constant C is evaluated.
C =
=
= 3.50×10⁵
Now at the mid point, x = 2.5 mm = 0.0025 m
Potential = V' =
=
= 119 V
Kinetic energy per unit charge is equal to the electric potential.
or 0.5 m v^2 = V' q
Here m is the mass of the electron and q is the charge of the electron.
m= 9.1×10⁻³¹ kg
q = 1.6×10⁻¹⁹ coulombs
⇒
⇒
⇒ v = 6.47×10⁶ m/s
⇒ Velocity of the electron mid way = v = 6.47×10⁶ m/s