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In free space, a particle A of charge 1  is held fixed at a point P. Another particle B of the same charge and mass 4  is kept at a distance of 1 mm from P.  If  B is released, then its velocity at a distance of  9 mm from P is :

(a)

2.0

(b)

6.32

(c)

1.5

(d)

1.0 m/s



Question ID - 51374 | SaraNextGen Top Answer

In free space, a particle A of charge 1  is held fixed at a point P. Another particle B of the same charge and mass 4  is kept at a distance of 1 mm from P.  If  B is released, then its velocity at a distance of  9 mm from P is :

(a)

2.0

(b)

6.32

(c)

1.5

(d)

1.0 m/s

1 Answer
127 votes
Answer Key / Explanation : (b) -

Conservation of energy

=

v=

127 votes


127