1
MHT CET 2023 11th May Evening Shift
MCQ (Single Correct Answer)
+1
-0

A rectangular block of mass '$$\mathrm{m}$$' and crosssectional area A, floats on a liquid of density '$$\rho$$'. It is given a small vertical displacement from equilibrium, it starts oscillating with frequency '$$n$$' equal to ( $$g=$$ acceleration due to gravity)

A
$$\frac{1}{2 \pi} \sqrt{\frac{\mathrm{Apg}}{\mathrm{m}}}$$
B
$$2 \pi \sqrt{\frac{\mathrm{Apg}}{\mathrm{m}}}$$
C
$$\frac{1}{2 \pi} \sqrt{\frac{\mathrm{m}}{\mathrm{Apg}}}$$
D
$$2 \pi \sqrt{\frac{\mathrm{m}}{\mathrm{Apg}}}$$
2
MHT CET 2023 11th May Evening Shift
MCQ (Single Correct Answer)
+1
-0

Two spherical conductors of capacities $$3 \mu \mathrm{F}$$ and $$2 \mu \mathrm{F}$$ are charged to same potential having radii $$3 \mathrm{~cm}$$ and $$2 \mathrm{~cm}$$ respectively. If '$$\sigma_1$$' and '$$\sigma_2$$' represent surface density of charge on respective conductors then $$\frac{\sigma_1}{\sigma_2}$$ is

A
$$\frac{1}{3}$$
B
$$\frac{1}{2}$$
C
$$\frac{2}{3}$$
D
$$\frac{3}{4}$$
3
MHT CET 2023 11th May Evening Shift
MCQ (Single Correct Answer)
+1
-0

A circular arc of radius '$$r$$' carrying current '$$\mathrm{I}$$' subtends an angle $$\frac{\pi}{16}$$ at its centre. The radius of a metal wire is uniform. The magnetic induction at the centre of circular arc is $$\left[\mu_0=\right.$$ permeability of free space]

A
$$\frac{\mu_0 \mathrm{I}}{32 \mathrm{r}}$$
B
$$\frac{\mu_0 \mathrm{I}}{16 \mathrm{r}}$$
C
$$\frac{\mu_0 \mathrm{I}}{64 \mathrm{r}}$$
D
$$\frac{\mu_0 \mathrm{I}}{8 \mathrm{r}}$$
4
MHT CET 2023 11th May Evening Shift
MCQ (Single Correct Answer)
+1
-0

A sound of frequency $$480 \mathrm{~Hz}$$ is emitted from the stringed instrument. The velocity of sound in air is $$320 \mathrm{~m} / \mathrm{s}$$. After completing 180 vibrations, the distance covered by a wave is

A
60 m
B
90 m
C
120 m
D
180 m
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