1
MHT CET 2022 11th August Evening Shift
MCQ (Single Correct Answer)
+1
-0

The magnetic susceptibility of the material of a rod is 349 and permeability of vacuum $$\mu_0$$ is $$4 \pi \times 10^{-7}$$ SI units. Absolute permeability of the material of the rod in SI units is

A
$$4400 \times 10^{-7}$$
B
$$4200 \times 10^{-7}$$
C
$$4800 \times 10^{-7}$$
D
$$4600 \times 10^{-7}$$
2
MHT CET 2021 24th September Evening Shift
MCQ (Single Correct Answer)
+1
-0

Two bar magnets '$$\mathrm{P}$$' and '$$\mathrm{Q}$$' are kept in uniform magnetic field '$$\mathrm{B}$$' with magnetic moments '$$\mathrm{M_P}$$' and '$$\mathrm{M_Q}$$' respectively. Magnet 'P' is oscillating with frequency twice that of magnet 'Q'. If the moment of inertia of the magnet 'P' is twice that of magnet 'Q' then

A
$$\mathrm{M}_{\mathrm{Q}}=2 \mathrm{M}_{\mathrm{P}}$$
B
$$\mathrm{M_P=2 M_Q}$$
C
$$\mathrm{M}_{\mathrm{P}}=8 \mathrm{M}_Q$$
D
$$\mathrm{M}_{\mathrm{Q}}=8 \mathrm{MP}_{\mathrm{P}}$$
3
MHT CET 2021 24th September Evening Shift
MCQ (Single Correct Answer)
+1
-0

A magnetic dipole of magnetic moment $$\mathrm{M}$$, is freely suspended in a magnetic field of induction B. The minimum and maximum values of potential energy of the dipole, respectively are

A
$$-\mathrm{MB},+\mathrm{MB}$$
B
$$0, \mathrm{MB}$$
C
$$0,2 \mathrm{MB}$$
D
MB, 0
4
MHT CET 2021 24th September Morning Shift
MCQ (Single Correct Answer)
+1
-0

A current '$$I$$' is flowing in a conductor of length '$$L$$' when it is bent in the form of a circular loop, its magnetic moment will be

A
$$\frac{\mathrm{IL}}{4 \pi^2}$$
B
$$4 \pi \mathrm{L}^2$$
C
$$\frac{4 \pi}{\mathrm{IL}^2}$$
D
$$\frac{\mathrm{IL}^2}{4 \pi}$$
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