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

For polyatomic gases, the ratio of molar specific heat at constant pressure to constant volume is ( $$\mathrm{f}=$$ degrees of freedom)

A
$$\frac{2+\mathrm{f}}{3+\mathrm{f}}$$
B
$$\frac{3+\mathrm{f}}{2+\mathrm{f}}$$
C
$$\frac{3+\mathrm{f}}{4+\mathrm{f}}$$
D
$$\frac{4+\mathrm{f}}{3+\mathrm{f}}$$
2
MHT CET 2023 12th May Evening Shift
MCQ (Single Correct Answer)
+1
-0

A particle is moving in a circle with uniform speed '$$v$$'. In moving from a point to another diametrically opposite point

A
the momentum changes by $$\mathrm{mv}$$
B
the momentum changes by $$2 \mathrm{~mv}$$
C
the kinetic energy changes by $$\frac{1}{2} \mathrm{mv}^2$$
D
the kinetic energy changes by $$\mathrm{m v^2}$$
3
MHT CET 2023 12th May Evening Shift
MCQ (Single Correct Answer)
+1
-0

Select the WRONG statement from the following. For an isothermal process

A
Energy exchanged is used to do work
B
Perfect thermal equilibrium with environment
C
Equation of state PV is not constant.
D
No change internal energy.
4
MHT CET 2023 12th May Evening Shift
MCQ (Single Correct Answer)
+1
-0

Two concentric circular coils of 10 turns each are situated in the same plane. Their radii are $$20 \mathrm{~cm}$$ and $$40 \mathrm{~cm}$$ and they carry respectively $$0.2 \mathrm{~A}$$ and $$0.3 \mathrm{~A}$$ current in opposite direction. The magnetic field at the centre is ($$\mu_0=4 \pi \times 10^{-7}$$ SI units)

A
$$4 \pi \times 10^{-7} \mathrm{~T}$$
B
$$5 \pi \times 10^{-7} \mathrm{~T}$$
C
$$2 \pi \times 10^{-5} \mathrm{~T}$$
D
$$7 \pi \times 10^{-6} \mathrm{~T}$$
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