1
MHT CET 2021 24th September Evening Shift
+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
$$\mathrm{M}_{\mathrm{Q}}=8 \mathrm{MP}_{\mathrm{P}}$$
2
MHT CET 2021 24th September Evening Shift
+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
3
MHT CET 2021 24th September Morning Shift
+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
$$\frac{\mathrm{IL}^2}{4 \pi}$$
4
MHT CET 2021 23th September Morning Shift
+1
-0

A bar magnet has length $$3 \mathrm{~cm}$$, cross-sectional area $$2 \mathrm{~cm}^2$$ and magnetic moment $$3 \mathrm{~Am}^2$$. The intensity of magnetisation of bar magnet is

A
$$2 \times 10^5 \mathrm{~A} / \mathrm{m}$$
B
$$3 \times 10^5 \mathrm{~A} / \mathrm{m}$$
C
$$4 \times 10^5 \mathrm{~A} / \mathrm{m}$$
D
$$5 \times 10^5 \mathrm{~A} / \mathrm{m}$$
EXAM MAP
Medical
NEET