1
MHT CET 2023 14th May Morning Shift
MCQ (Single Correct Answer)
+1
-0

For a purely inductive or a purely capacitive circuit, the power factor is

A
zero
B
0.5
C
1
D
$$\infty$$
2
MHT CET 2023 14th May Morning Shift
MCQ (Single Correct Answer)
+1
-0

The electric field intensity on the surface of a solid charged sphere of radius '$$r$$' and volume charge density '$$\rho$$' is ($$\varepsilon_0=$$ permittivity of free space)

A
$$\frac{\rho r}{3 \varepsilon_0}$$
B
$$\frac{\rho}{4 \pi \varepsilon_0 \mathrm{r}}$$
C
zero
D
$$\frac{5 \rho \mathrm{r}}{6 \varepsilon_0}$$
3
MHT CET 2023 14th May Morning Shift
MCQ (Single Correct Answer)
+1
-0

A body is said to be opaque to the radiation if (a, r and t are coefficient of absorption, reflection and transmission respectively)

A
$$\mathrm{t}=0$$ and $$\mathrm{a}+\mathrm{r}=1$$
B
$$\mathrm{a}=\mathrm{r}=\mathrm{t}$$
C
$$t \neq 0$$
D
$$\mathrm{a}=0, \mathrm{r}=1, \mathrm{t}=1$$
4
MHT CET 2023 14th May Morning Shift
MCQ (Single Correct Answer)
+1
-0

In a thermodynamic system, $$\Delta U$$ represents the increases in its internal energy and dW is the work done by the system then correct statement out of the following is

A
$$\Delta \mathrm{U}=\mathrm{dW}$$ is an isothermal process
B
$$\Delta \mathrm{U}=-\mathrm{dW}$$ is an adiabatic process
C
$$\Delta \mathrm{U}=-\mathrm{dW}$$ is an isothermal process
D
$$\Delta \mathrm{U}=\mathrm{dW}$$ is an adiabatic process
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