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Question

If two charged particles projected with same speed have similar curved paths in a uniform perpendicular electrostatic field, then pick the false statements.
  1. They have the same specific charges i.e., e/m.
  2. Their masses must be same.
  3. Their charges are of same polarity.
  4. Magnitudes of their charges must be same.

A
They have the same specific charges i.e., e/m.
B
Their masses must be same.
C
Magnitudes of their charges must be same.
D
Their charges are of same polarity.
Solution
Verified by Toppr

y=12qEmt2......(1)

x=ut.....(2)

y=qE2mx2u2y=(qm)(E2u2)x2

if they have similar paths then qE2mu2 is same q1m1=q2m2

so (b) and (d) are false.

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