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

An $$\alpha$$-particle of energy 10 eV is moving in a circular path in uniform magnetic field. The energy of proton moving in the same path and same magnetic field will be [mass of $$\alpha$$-particle $$=4$$ times mass of proton]

A
8 eV
B
16 eV
C
4 eV
D
10 eV
2
MHT CET 2020 16th October Morning Shift
MCQ (Single Correct Answer)
+1
-0

An electron $$(e)$$ is revolving in a circular orbit of radius $$r$$ in hydrogen atom. The angular momentum of the electron is ($$M=$$ magnetic dipole moment associated with it and $$m=$$ mass of electron)

A
$$\frac{m M}{e}$$
B
$$\frac{3 M m}{e}$$
C
$$\frac{2 m M}{e}$$
D
$$\frac{4 m M}{e}$$
3
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
$$\frac{R}{3}$$
4
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
$$q(v \times B)$$
MHT CET Subjects
EXAM MAP
Medical
NEETAIIMS
Graduate Aptitude Test in Engineering
GATE CSEGATE ECEGATE EEGATE MEGATE CEGATE PIGATE IN
Civil Services
UPSC Civil Service
Defence
NDA
Staff Selection Commission
SSC CGL Tier I
CBSE
Class 12