Two a-particles have the ratio of their velocities as 3 : 2 on entering the field. If they move in different circular paths, then the ratio of the radii of their paths is
(a) 2 : 3
(b) 3 : 2
(c) 9 : 4
(d) 4 : 9
Answers
Answered by
2
As the lorentz force which acts on the particle will acts as centripetal force
∴qvB=
r
mv
2
∴r=
qB
mv
⇒r∝v or
r
B
r
A
=
v
B
v
A
=
2
3
answer A is correct
Answered by
1
Answer:
As we know that
r=mv/qb.
ratio of their velocity. ( 3/2.given)
r1 =mv1/qb
r2= mv2/qb
for ratio
r1/r2= mv1/qb/mv2/qb
r1/r2=v2/v1
r1/r2=2/3
r1 : r2 = 2 : 3.
As particles are same there mass is equal
value of q is same for all
magnetic field (b) is same for both charges
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