Published by:
CGP EDU Academic Team
Published on: September 12, 2026
A particle of mass ' 
' and charge ' 
' is dropped, along the axis of a fixed disc from a height ' 
' with zero initial velocity (as shown). The disc has a radius ' 
' and a uniform charge density 
, with its axis vertical. The particle has 
. If the particle just reaches the disc, the value of ' H ' is
A
B
C
D
Text Solution
Verified by ExpertsThe correct answer is:
D
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