A large metal plate has a surface charge density of 
. An electron having initial kinetic energy of 
is moving towards the center of the plate. If the electron stops just before reaching the plate then the initial distance between the electron and the plate is [Take 
]
A
B
C
D
Text Solution
Verified by ExpertsThe correct answer is:
D
Let V 0 be potential at surface Then, 
By, law of conservation
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