1
MHT CET 2023 13th May Morning Shift
MCQ (Single Correct Answer)
+1
-0

A large number of water droplets each of radius '$$t$$' combine to form a large drop of Radius '$$R$$'. If the surface tension of water is '$$T$$' & mechanical equivalent of heat is '$$\mathrm{J}$$' then the rise in temperature due to this is

A
$$\frac{2 \mathrm{~T}}{\mathrm{rJ}}$$
B
$$\frac{3 \mathrm{~T}}{\mathrm{RJ}}$$
C
$$\frac{3 T}{J}\left(\frac{1}{r}-\frac{1}{R}\right)$$
D
$$\frac{2 \mathrm{~T}}{\mathrm{~J}}\left(\frac{1}{\mathrm{r}}-\frac{1}{\mathrm{R}}\right)$$
2
MHT CET 2023 13th May Morning Shift
MCQ (Single Correct Answer)
+1
-0

In resonance tube, first and second resonance are obtained at depths $$22.7 \mathrm{~cm}$$ and $$70.2 \mathrm{~cm}$$ respectively. The third resonance will be obtained at a depth

A
117.7 cm
B
92.9 cm
C
115.5 cm
D
113.5 cm
3
MHT CET 2023 13th May Morning Shift
MCQ (Single Correct Answer)
+1
-0

Twenty seven droplets of water each of radius $$0.1 \mathrm{~mm}$$ merge to form a single drop then the energy released is

A
$$1.6 \times 10^{-3} \mathrm{~J}$$
B
$$1.6 \mathrm{~J}$$
C
$$1600 \mathrm{~J}$$
D
$$1.6 \times 10^{-7} \mathrm{~J}$$
4
MHT CET 2023 13th May Morning Shift
MCQ (Single Correct Answer)
+1
-0

If two inputs of a NAND gate are shorted, the resulting gate is

A
an OR gate
B
an AND gate
C
a NOT gate
D
a NOR gate
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