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

Radius of gyration of a thin uniform circular disc about the axis passing through its centre and perpendicular to its plane is $$\mathrm{K}_{\mathrm{c}}$$. Radius of gyration of the same disc about a diameter of the disc is $$K_d$$. The ratio $$K_c: K_d$$ is

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

When a current of $$1 \mathrm{~A}$$ is passed through a coil of 100 turns, the flux associated with it is $$2.5 \times 10^{-5} \mathrm{~Wb} /$$ turn. The self inductance of the coil in millihenry is

A
40
B
25
C
4
D
2.5
3
MHT CET 2023 11th May Morning Shift
MCQ (Single Correct Answer)
+1
-0

A spherical liquid drop of radius $$\mathrm{R}$$ is divided into 8 equal droplets. If surface tension is $$\mathrm{S}$$, then the work done in this process will be

A
$$2 \pi R^2 S$$
B
$$3 \pi \mathrm{R}^2 \mathrm{~S}$$
C
$$4 \pi R^2 S$$
D
$$2 \pi \mathrm{RS}^2$$
4
MHT CET 2023 11th May Morning Shift
MCQ (Single Correct Answer)
+1
-0

The rate of flow of heat through a metal rod with temperature difference $$40^{\circ} \mathrm{C}$$ is $$1600 \mathrm{~cal} / \mathrm{s}$$. The thermal resistance of metal rod in $${ }^{\circ} \mathrm{C} \mathrm{s} / \mathrm{cal}$$ is

A
0.025
B
0.25
C
2.5
D
40
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