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

If the angle of dip at places $$A$$ and $$B$$ are $$30^{\circ}$$ and $$45^{\circ}$$ respectively, then the ratio of horizontal component of earth's magnetic field at $$A$$ to that at $$B$$ will be $$\left[\sin 45^{\circ}=\cos 45^{\circ}=\frac{1}{\sqrt{2}}, \sin \frac{\pi}{6}=\frac{1}{2}, \cos \frac{\pi}{6}=\frac{\sqrt{3}}{2}\right]$$

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

A thin light weight rod of diamagnetic substance such as silver is suspended in uniform external magnetic field. It will align itself with its length

A
parallel to magnetic field
B
perpendicular to magnetic field
C
inclined at an angle $$45^{\circ}$$ to magnetic field
D
inclined at an angle $$120^{\circ}$$ to magnetic field
3
MHT CET 2020 16th October Morning Shift
MCQ (Single Correct Answer)
+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
$$\left(\frac{2 \mu_0}{\pi}\right) \frac{M}{d^3}$$
4
MHT CET 2020 16th October Morning Shift
MCQ (Single Correct Answer)
+1
-0

An iron rod is placed parallel to magnetic field of intensity $$2000 \mathrm{~A} / \mathrm{m}$$. The magnetic flux through the rod is $$6 \times 10^{-4} \mathrm{~Wb}$$ and its cross-sectional area is $$3 \mathrm{~cm}^2$$. The magnetic permeability of the rod in $$\frac{\mathrm{Wb}}{\mathrm{A}-\mathrm{m}}$$ is

A
$$10^{-1}$$
B
$$10^{-2}$$
C
$$10^{-4}$$
D
$$10^{-3}$$
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