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Question

A charged particle of unit mass and unit charge moves with velocity v=(8^i+6^j)m/s in a magnetic field of B=2^kT. Choose the correct alternative(s).

A
The path of the particle may be x2+y24x21=0
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B
The path of the particle may be x2+y2=25
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C
The path of the particle may be y2+z2=25
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D
The time period of the particle will be 3.14 s
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Solution

The correct options are
A The path of the particle may be x2+y24x21=0
B The path of the particle may be x2+y2=25
C The time period of the particle will be 3.14 s
r=mVBq=(1)(10)(2)(1)=5m
T=2πmBq=(2)(π)(1)(2)(1)=π=3.14s
Plane of circle is perpendicular to B, i.e.,X-Y plane.

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