1
MHT CET 2023 12th May Evening Shift
MCQ (Single Correct Answer)
+1
-0

A coil of '$$n$$' turns and radius '$$R$$' carries a current '$$I$$'. It is unwound and rewound again to make another coil of radius $$\left(\frac{\mathrm{R}}{3}\right)$$, current remaining the same. The ratio of magnetic moment of the new coil to that of original coil is

A
$$3: 1$$
B
$$1: 3$$
C
$$9: 1$$
D
$$1: 9$$
2
MHT CET 2023 12th May Evening Shift
MCQ (Single Correct Answer)
+1
-0

An ink mark is made on a piece of paper on which a glass slab of thickness '$$t$$' is placed. The ink mark appears to be raised up through a distance '$$x$$' when viewed at nearly normal incidence. If the refractive index of the material of glass slab is '$$\mu$$' then the thickness of glass slab is given by

A
$$\frac{\mu \mathrm{x}}{\mu-1}$$
B
$$\frac{(\mu-1)}{\mu}$$
C
$$\frac{\mu-1}{\mu \mathrm{x}}$$
D
$$\frac{\mu}{(\mu-1) x}$$
3
MHT CET 2023 12th May Evening Shift
MCQ (Single Correct Answer)
+1
-0

A spherical metal ball of radius '$$r$$' falls through viscous liquid with velocity '$$\mathrm{V}$$'. Another metal ball of same material but of radius $$\left(\frac{r}{3}\right)$$ falls through same liquid, then its terminal velocity will be

A
$$\frac{\mathrm{V}}{3}$$
B
$$\frac{V}{4}$$
C
$$\frac{\mathrm{V}}{6}$$
D
$$\frac{V}{9}$$
4
MHT CET 2023 12th May Evening Shift
MCQ (Single Correct Answer)
+1
-0

A body of mass '$$\mathrm{m}$$' attached at the end of a string is just completing the loop in a vertical circle. The apparent weight of the body at the lowest point in its path is ( $$\mathrm{g}$$ = gravitational acceleration)

A
zero
B
$$\mathrm{mg}$$
C
$$3 \mathrm{~mg}$$
D
$$6 \mathrm{~mg}$$
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