1
MHT CET 2021 22th September Morning Shift
+1
-0

The permeability of a metal is $$0.1256 ~\mathrm{TmA}^{-1}$$. Its relative permeability will be $$\mathrm{\left( {{{{\mu _0}} \over {4\pi }} = {{10}^{ - 7}}\,SI\,unit} \right)}$$ ($$\pi=3.14$$)

A
$$10^5$$
B
$$3 \times 10^5$$
C
$$2 \times 10^6$$
D
$$10^4$$
2
MHT CET 2021 21th September Evening Shift
+1
-0

The north pole of a long horizontal bar magnet is being brought towards closed circuit consisting of a coil. The direction of induced current produced in it is

A
anticlockwise
B
horizontal
C
vertical
D
clockwise
3
MHT CET 2021 21th September Morning Shift
+1
-0

What is susceptibility of a medium, if its relative permeability is 0.85?

A
1.85
B
0.15
C
$$-0.15$$
D
$$-0.85$$
4
MHT CET 2020 16th October Morning Shift
+1
-0

Two identical bar magnets each of magnetic moment $$M$$, separated by some distance are kept perpendicular to each other. The magnetic induction at a point at the same distance $$d$$ from the centre of magnets, is ($$\mu_0=$$ permeability of free space)

A
$$\frac{\mu_0}{4 \pi}(\sqrt{3}) \frac{M}{d^3}$$
B
$$\frac{\mu_0}{4 \pi}(\sqrt{2}) \frac{M}{d^3}$$
C
$$\frac{\mu_0}{4 \pi}(\sqrt{5}) \frac{M}{d^3}$$
D
$$\left(\frac{2 \mu_0}{\pi}\right) \frac{M}{d^3}$$
EXAM MAP
Medical
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