1
MHT CET 2023 9th May Evening Shift
+1
-0

A gas is compressed at a constant pressure of $$50 \mathrm{~N} / \mathrm{m}^2$$ from a volume of $$10 \mathrm{~m}^3$$ to a volume of $$4 \mathrm{~m}^3$$. Energy of $$100 \mathrm{~J}$$ is then added to the gas by heating. Its internal energy is

A
increased by $$400 \mathrm{~J}$$
B
increased by $$200 \mathrm{~J}$$
C
increased by $$100 \mathrm{~J}$$
D
decreased by $$200 \mathrm{~J}$$
2
MHT CET 2023 9th May Evening Shift
+1
-0

The pressure exerted by an ideal gas at a particular temperature is directly proportional to

A
the mean speed of the gas molecules.
B
mean of the square of the speed of the gas molecules.
C
the square of the mean speed of the gas molecules.
D
the root mean square speed of the gas molecules.
3
MHT CET 2023 9th May Evening Shift
+1
-0

The side of a copper cube is $$1 \mathrm{~m}$$ at $$0^{\circ} \mathrm{C}$$. What will be the change in its volume, when it is heated to $$100^{\circ} \mathrm{C}$$ ? $$\left[\alpha_{\text {copper }}=18 \times 10^{-6} /{ }^{\circ} \mathrm{C}\right]$$

A
$$45 \times 10^{-4} \mathrm{~m}^3$$
B
$$54 \times 10^{-4} \mathrm{~m}^3$$
C
$$34 \times 10^{-4} \mathrm{~m}^3$$
D
$$64 \times 10^{-4} \mathrm{~m}^3$$
4
MHT CET 2023 9th May Evening Shift
+1
-0

The temperature of an ideal gas is increased from $$27^{\circ} \mathrm{C}$$ to $$927^{\circ} \mathrm{C}$$. The r.m.s. speed of its molecules becomes

A
twice
B
four times.
C
half.
D
one-fourth.
EXAM MAP
Medical
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