1
MHT CET 2020 16th October Morning Shift
MCQ (Single Correct Answer)
+1
-0

A charged particle is moving in a uniform magnetic field in a circular path of radius $$R$$. When the energy of the particle becomes three times the original, the new radius will be

A
$$R$$
B
$$\sqrt{3} R$$
C
$$3 R$$
D
$$\frac{R}{3}$$
2
MHT CET 2020 16th October Morning Shift
MCQ (Single Correct Answer)
+1
-0

A charge $$q$$ moves with velocity $$v$$ through electric field $$\mathrm{E}$$ as well as magnetic field (B). Then, the force acting on it is

A
$$q(E \times v)$$
B
$$q(B \times v)$$
C
$$q E+q(v \times B)$$
D
$$q(v \times B)$$
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