1
MHT CET 2024 15th May Evening Shift
MCQ (Single Correct Answer)
+1
-0

A glass prism ' A ' deviates the red and blue rays through $10^{\circ}$ and $12^{\circ}$ respectively. A second prism ' B ' deviates them through $8^{\circ}$ and $10^{\circ}$ respectively. The ratio of their dispersive powers is (A to B)

A
$9: 13$
B
$4: 5$
C
$9: 11$
D
$8: 9$
2
MHT CET 2024 15th May Evening Shift
MCQ (Single Correct Answer)
+1
-0

In an electric field due to charge $Q$, a charge $q$ moves from point A to B as shown in the figure. The work done is ( $\varepsilon_0=$ permittivity of free space)

MHT CET 2024 15th May Evening Shift Physics - Electrostatics Question 38 English

A
$\frac{1}{4 \pi \varepsilon_0} \frac{\mathrm{Qq}}{\mathrm{r}^2}$
B
$\frac{1}{4 \pi \varepsilon_0} \frac{\mathrm{Qq}}{\mathrm{r}^2} \frac{\pi}{6}$
C
$\frac{1}{4 \pi \varepsilon_0} \frac{\mathrm{Qq}}{\mathrm{r}}$
D
zero
3
MHT CET 2024 15th May Evening Shift
MCQ (Single Correct Answer)
+1
-0

An air cored coil has a self inductance 0.1 H . A soft iron core of relative permeability 1000 is introduced and the number of turns is reduced $\left(\frac{1}{10}\right)^{\text {th }}$. The value of self inductance is

A
0.1 H
B
1 mH
C
1 H
D
10 mH
4
MHT CET 2024 15th May Evening Shift
MCQ (Single Correct Answer)
+1
-0

Heat engine operating between temperature $T_1$ and $T_2$ has efficiency $\frac{1}{6}$. When $T_2$ is lowered by 62 K , its efficiency increases to $\frac{1}{3}$. Then $T_1$ and $T_2$ respectively are

A
$372 \mathrm{~K}, 310 \mathrm{~K}$
B
$372 \mathrm{~K}, 330 \mathrm{~K}$
C
$330 \mathrm{~K}, 268 \mathrm{~K}$
D
$310 \mathrm{~K}, 248 \mathrm{~K}$
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