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Byju's Answer
Standard X
Physics
Kinetic Energy
There is a sp...
Question
There is a spherical cavity of radius R/2 in uniformly charged spherical region having charge density r and radius R. A small charged particle having q0 charge is released at point 0. It will collide with the wall of cavity with kinetic energy
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Solution
→
E
=
ρ
R
2
3
t
0
=
ρ
R
6
t
0
→
F
=
ρ
R
q
0
6
E
0
⇒
a
=
ρ
R
q
0
6
t
0
m
∴
v
2
−
0
=
2
×
ρ
R
2
q
0
6
t
0
m
×
R
2
⇒
v
2
=
ρ
R
2
q
0
6
t
0
m
m
v
2
2
=
ρ
R
2
q
0
12
t
0
∴
K
E
=
ρ
R
2
q
0
12
t
0
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