AP EAPCET 2024 - 19th May Evening Shift | Magnetism and Matter Question 6 | Physics | AP EAPCET - ExamSIDE.Com

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1

AP EAPCET 2024 - 19th May Evening Shift

MCQ (Single Correct Answer)

+1

-0

The domain in ferromagnetic material is in the form of a cube of side $2 \mu \mathrm{~m}$. Number of atoms in that domain is $9 \times 10^{10}$ and each atom has a dipole movement of $9 \times 10^{-24} \mathrm{Am}^2$. The magnetisation of the domain is (approximately).

A

$10 \times 10^4 \mathrm{Am}^{-1}$

B

$8 \times 10^4 \mathrm{Am}^{-1}$

C

$12 \times 10^4 \mathrm{Am}^{-1}$

D

$9 \times 10^4 \mathrm{Am}^{-1}$

2

AP EAPCET 2024 - 18th May Morning Shift

MCQ (Single Correct Answer)

+1

-0

A magnet suspended in a uniform magnetic field is heated, so as to reduce its magnetic moment by $19 \%$. By doing this, the time period of the magnet approximately

A

incresse by $11 \%$

B

decrease by $19 \%$

C

increases by $19 \%$

D

decreases by $4 \%$

3

AP EAPCET 2022 - 5th July Morning Shift

MCQ (Single Correct Answer)

+1

-0

Two short magnets of equal dipole moments $$M$$ are fastened perpendicularly at their centres. The magnitude of the magnetic field at a distance $$d$$ from the centre on the bisector of the right angle is ($$\mu_0=$$ Permeability of free space)

A

$$\frac{\mu_0}{4 \pi} \frac{2 \sqrt{2} M}{d^3}$$

B

$$\frac{\mu_0}{4 \pi} \frac{5 M}{d^3}$$

C

$$\frac{\mu_0}{4 \pi} \frac{2 M}{d^3}$$

D

$$\frac{\mu_0}{4 \pi} \frac{10 M}{d^3}$$

4

AP EAPCET 2022 - 4th July Evening Shift

MCQ (Single Correct Answer)

+1

-0

A steel wire of length $$l$$ and magnetic moment $$M$$ is bent into a semicircular arc of radius $$R$$. The new magnetic moment is

A

$$M$$

B

$$\frac{2 R M}{\pi l}$$

C

$$\frac{2 M}{\pi}$$

D

$$\frac{2 \pi R M}{1}$$

Questions Asked from MCQ (Single Correct Answer)

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