1
COMEDK 2024 Evening Shift
MCQ (Single Correct Answer)
+1
-0

For a paramagnetic material, the dependence of the magnetic susceptibility $$\chi$$ on the absolute temperature is given as

A
Independent of $$\mathrm{T}$$
B
$$ X \propto \frac{1}{T^2} $$
C
$$ X \propto T $$
D
$$ X \propto\frac{1}{T} $$
2
COMEDK 2024 Morning Shift
MCQ (Single Correct Answer)
+1
-0

Steel is preferred to soft iron for making permanent magnets because,

A
Susceptibility of steel is less than one
B
Permeability of steel is slightly greater than soft iron
C
Steel has more coercivity than soft iron
D
Steel is more paramagnetic
3
COMEDK 2023 Morning Shift
MCQ (Single Correct Answer)
+1
-0

If $$\theta_1$$ and $$\theta_2$$ be the apparent angles of dip observed in two vertical planes at right angles to each other, then the true angle of $$\operatorname{dip} \theta$$ is given by

A
$$\cot ^2 \theta=\cot ^2 \theta_1+\cot ^2 \theta_2$$
B
$$\tan ^2 \theta=\tan ^2 \theta_1+\tan ^2 \theta_2$$
C
$$\cot ^2 \theta=\cot ^2 \theta_1-\cot ^2 \theta_2$$
D
$$\tan ^2 \theta=\tan ^2 \theta_1-\tan ^2 \theta_2$$
4
COMEDK 2023 Evening Shift
MCQ (Single Correct Answer)
+1
-0

The magnetic permeability '$$\mu$$' a of a paramagnetic substance is :

A
$$\mu>1$$
B
$$\mu=1$$
C
$$\mu=0$$
D
$$\mu$$ is infinite
COMEDK 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