If two charged particles projected with same speed have similar curved paths in a uniform perpendicular electrostatic field, then pick the false statements.
They have the same specific charges i.e., e/m.
Their masses must be same.
Their charges are of same polarity.
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.
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Solution
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y=12qEmt2......(1)
x=ut.....(2)
y=qE2mx2u2⇒y=(qm)(E2u2)x2
if they have similar
paths then qE2mu2 is same ⇒q1m1=q2m2
so (b) and (d) are
false.
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