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

Two point charges '$$q 1$$' and '$$q 2$$' are separated by a distance '$$d$$'. What is the increase in potential energy of the system when '$$q 2$$' is moved towards '$$q 1$$' by a distance '$$\mathrm{x}$$' ? $$(x < d)(\frac{1}{4 \pi \varepsilon_0}=K$$, constant)

A
$$-\frac{K q_1 q_2 x}{d(d-x)}$$
B
$$-\frac{K q_1 q_2}{d(d-x)}$$
C
$$\frac{\mathrm{Kq}_1 \mathrm{q}_{2 x}}{\left(\mathrm{~d}^2-\mathrm{x}^2\right)}$$
D
$$\frac{\mathrm{Kq}_1 \mathrm{q}_2 \mathrm{x}}{\left(\mathrm{d}^2-\mathrm{x}^2\right)}$$
2
MHT CET 2023 12th May Evening Shift
MCQ (Single Correct Answer)
+1
-0

The ratio of intensities of two points on a screen in Young's double slit experiment when waves from the two slits have a path difference of $$\frac{\lambda}{4}$$ and $$\frac{\lambda}{6}$$ is

$$\left(\cos 90^{\circ}=0, \cos 60^{\circ}=0.5\right)$$

A
$$2: 1$$
B
$$2: 3$$
C
$$3: 4$$
D
$$3: 5$$
3
MHT CET 2023 12th May Evening Shift
MCQ (Single Correct Answer)
+1
-0

A simple pendulum is oscillating with frequency '$$F$$' on the surface of the earth. It is taken to a depth $$\frac{\mathrm{R}}{3}$$ below the surface of earth. ( $$\mathrm{R}=$$ radius of earth). The frequency of oscillation at depth $$\mathrm{R} / 3$$ is

A
$$\frac{2 \mathrm{~F}}{3}$$
B
$$\frac{\mathrm{F}}{\sqrt{1.5}}$$
C
F
D
$$\frac{\mathrm{F}}{3}$$
4
MHT CET 2023 12th May Evening Shift
MCQ (Single Correct Answer)
+1
-0

An a.c. source of $$15 \mathrm{~V}, 50 \mathrm{~Hz}$$ is connected across an inductor (L) and resistance (R) in series R.M.S. current of $$0.5 \mathrm{~A}$$ flows in the circuit. The phase difference between applied voltage and current is $$\left(\frac{\pi}{3}\right)$$ radian. The value of resistance $$(\mathrm{R})$$ is $$\left(\tan 60^{\circ}=\sqrt{3}\right)$$

A
$$10 \Omega$$
B
$$12 \Omega$$
C
$$15 \Omega$$
D
$$20 \Omega$$
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