1
MHT CET 2024 10th May Morning Shift
MCQ (Single Correct Answer)
+1
-0

In the following graph of flux density versus magnetizing force, coercivity and retentivity are respectively represented by the points

MHT CET 2024 10th May Morning Shift Physics - Magnetism and Matter Question 11 English

A
c, b
B
a, o
C
d, c
D
f, e
2
MHT CET 2024 9th May Evening Shift
MCQ (Single Correct Answer)
+1
-0
 

The correct relation between total magnetic field $(B)$, magnetic intensity $(\mathrm{H})$, permeability of free space $\left(\mu_0\right)$ and susceptibility $(\chi)$ is

A
$\frac{B}{H}=\mu_0(1-\chi)$
B
$\frac{\mathrm{B}}{\mathrm{H}}=\mu_0(1+\chi)^2$
C
$\frac{\mathrm{B}}{\mathrm{H}}=\mu_0(1+\chi)$
D
$\frac{\mathrm{B}}{\mathrm{H}}=\mu_0(1-\chi)^2$
3
MHT CET 2024 4th May Evening Shift
MCQ (Single Correct Answer)
+1
-0

A magnetic intensity of $500 \mathrm{~A} / \mathrm{m}$, produces a magnetic flux of $2.4 \times 10^{-5} \mathrm{~Wb}$ in an iron bar of cross-sectional area $0.4 \mathrm{~cm}^2$. The magnetic permeability of the iron bar is

A
$2.4 \times 10^{-3} \mathrm{~N} / \mathrm{m}^2$
B
$1.2 \times 10^{-3} \mathrm{~N} / \mathrm{m}^2$
C
$2.4 \times 10^{-4} \mathrm{~N} / \mathrm{m}^2$
D
$\quad 1.2 \times 10^{-4} \mathrm{~N} / \mathrm{m}^2$
4
MHT CET 2024 4th May Morning Shift
MCQ (Single Correct Answer)
+1
-0

The magnetic moments associated with two closely wound circular coils A and B of radius $r_A=10 \mathrm{~cm}$ and $r_B=20 \mathrm{~cm}$ respectively are equal if $\left(N_A, I_A\right.$ and $N_B, I_B$ are number of turns and current of A and B respectively)

A
$2 N_A \mathrm{I}_{\mathrm{A}}=\mathrm{N}_{\mathrm{B}} \mathrm{I}_{\mathrm{B}}$
B
$\mathrm{N}_{\mathrm{A}}=2 \mathrm{~N}_{\mathrm{B}}$
C
$\mathrm{N}_{\mathrm{A}} \mathrm{I}_{\mathrm{A}}=4 \mathrm{~N}_{\mathrm{B}} \mathrm{I}_{\mathrm{B}}$
D
$ 4 N_A I_A=N_B I_B$
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