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

The volume of a metal block increases by $$0.225 \%$$ when its temperature is increased by $$30^{\circ} \mathrm{C}$$. Hence coefficient of linear expansion of the material of metal block is

A
$$7.5 \times 10^{-5} /{ }^{\circ} \mathrm{C}$$.
B
$$6.75 \times 10^{-5} /{ }^{\circ} \mathrm{C}$$.
C
$$2.5 \times 10^{-5} /{ }^{\circ} \mathrm{C}$$.
D
$$1.5 \times 10^{-5} /{ }^{\circ} \mathrm{C}$$.
2
MHT CET 2023 12th May Evening Shift
MCQ (Single Correct Answer)
+1
-0

A tuning fork gives 3 beats with $$50 \mathrm{~cm}$$ length of sonometer wire. If the length of the wire is shortened by $$1 \mathrm{~cm}$$, the number of beats is still the same. The frequency of the fork is

A
256 Hz
B
288 Hz
C
297 Hz
D
320 Hz
3
MHT CET 2023 12th May Evening Shift
MCQ (Single Correct Answer)
+1
-0

The depth at which acceleration due to gravity becomes $$\frac{\mathrm{g}}{2 \mathrm{n}}$$ is $$(\mathrm{R}=$$ radius of earth, $$\mathrm{g}=$$ acceleration due to gravity on earth's surface, $$\mathrm{n}$$ is integer)

A
$$\frac{\mathrm{R}(1-2 \mathrm{n})}{\mathrm{n}}$$
B
$$\frac{\mathrm{R}(1-\mathrm{n})}{2 \mathrm{n}}$$
C
$$\frac{\mathrm{R}(\mathrm{n}-1)}{\mathrm{n}}$$
D
$$\frac{\mathrm{R}(2 \mathrm{n}-1)}{2 \mathrm{n}}$$
4
MHT CET 2023 12th May Evening Shift
MCQ (Single Correct Answer)
+1
-0

Two resistance $$\mathrm{X}$$ and $$\mathrm{Y}$$ are connected in the two gaps of a meterbridge and the null points is obtained at $$20 \mathrm{~cm}$$ from zero end. When the resistance of $$20 \Omega$$ is connected in series with the smaller of the two resistance $$\mathrm{X}$$ and $$\mathrm{Y}$$, the null point shifts to $$40 \mathrm{~cm}$$ from left end. The value of smaller resistance in ohm is

A
6
B
9
C
12
D
15
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