1
MHT CET 2019 3rd May Morning Shift
MCQ (Single Correct Answer)
+1
-0

A mass is whirled in a circular path with constant angular velocity and its linear velocity is $v$. If the string is now halved keeping the angular momentum same, the linear velocity is

A
$2 v$
B
$\frac{v}{2}$
C
$v$
D
$v \sqrt{2}$
2
MHT CET 2019 3rd May Morning Shift
MCQ (Single Correct Answer)
+1
-0

A circular coil and a square coil is prepared from two identical metal wires and a current is passed through it. Ratio of magnetic dipole moment associated with circular coil to that of square coil is

A
$\frac{2}{\pi}$
B
$\frac{\pi}{2}$
C
$\pi$
D
$\frac{4}{\pi}$
3
MHT CET 2019 3rd May Morning Shift
MCQ (Single Correct Answer)
+1
-0

In Young's double slit experiment fifth dark fringe is formed opposite to one of the slit. IID is the distance between the slits and the screen and $d$ is the separation between the slits, then the wavelength of light used is

A
$\frac{d^2}{5 D}$
B
$\frac{d^2}{9 D}$
C
$\frac{d^2}{6 D}$
D
$\frac{d^2}{15 D}$
4
MHT CET 2019 3rd May Morning Shift
MCQ (Single Correct Answer)
+1
-0

Figure show the circular coil carrying current $I$ kept very close but not touching at a point $A$ on a straight conductor carrying the same current $I$. The magnitude of magnetic induction at the centre of the circular coil will be

MHT CET 2019 3rd May Morning Shift Physics - Moving Charges and Magnetism Question 1 English

A
$\frac{\mu_0 0}{2 r}\left(1+\frac{1}{\pi}\right)$
B
$\frac{\mu_0 l}{2 \pi r}$
C
$\frac{\mu_0 l}{2 r}$
D
zero
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