1
JEE Main 2023 (Online) 8th April Evening Shift
+4
-1 Electric potential at a point '$$\mathrm{P}$$' due to a point charge of $$5 \times 10^{-9} \mathrm{C}$$ is $$50 \mathrm{~V}$$. The distance of '$$\mathrm{P}$$' from the point charge is:

(Assume, $$\frac{1}{4 \pi \varepsilon_{0}}=9 \times 10^{+9} ~\mathrm{Nm}^{2} \mathrm{C}^{-2}$$ )

A
0.9 cm
B
90 cm
C
3 cm
D
9 cm
2
JEE Main 2023 (Online) 8th April Morning Shift
+4
-1 Graphical variation of electric field due to a uniformly charged insulating solid sphere of radius $$\mathrm{R}$$, with distance $$r$$ from the centre O is represented by: A B C D 3
JEE Main 2023 (Online) 6th April Evening Shift
+4
-1 A dipole comprises of two charged particles of identical magnitude $$q$$ and opposite in nature. The mass 'm' of the positive charged particle is half of the mass of the negative charged particle. The two charges are separated by a distance '$$l$$'. If the dipole is placed in a uniform electric field '$$\bar{E}$$'; in such a way that dipole axis makes a very small angle with the electric field, '$$\bar{E}$$'. The angular frequency of the oscillations of the dipole when released is given by:

A
$$\sqrt{\frac{3 q E}{2 m l}}$$
B
$$\sqrt{\frac{4 q E}{m l}}$$
C
$$\sqrt{\frac{8 q E}{3 m l}}$$
D
$$\sqrt{\frac{8 q E}{m l}}$$
4
JEE Main 2023 (Online) 6th April Morning Shift
+4
-1 For a uniformly charged thin spherical shell, the electric potential (V) radially away from the centre (O) of shell can be graphically represented as - A B C D JEE Main Subjects
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