Answer:
Explanation:
Given that,
The speed of an electromagnetic wave traveling in a transparent nonmagnetic substance is given by :
Where
k is the dielectric constant of the substance.
v is the speed of light in water
So, the speed of light in water is
Answer:
Explanation:
Initial speed of the electron, u = 0
The charge per unit area of each plate,
Separation between the plates,
An electron is released from rest, u = 0
Using equation of kinematics,
..........(1)
Acceleration of the electron in electric field, ............(2)
Electric field, ............(3)
From equation (1), (2) and (3) :
v = 10840393.1799 m/s
or
So, the electron is moving with a speed of before it reaches the positive plate. Hence, this is the required solution.