1
JEE Main 2024 (Online) 4th April Evening Shift
MCQ (Single Correct Answer)
+4
-1

A charge $$q$$ is placed at the center of one of the surface of a cube. The flux linked with the cube is:

A
$$\frac{q}{2 \epsilon_0}$$
B
Zero
C
$$\frac{q}{4 \epsilon_0}$$
D
$$\frac{q}{8 \epsilon_0}$$
2
JEE Main 2024 (Online) 4th April Morning Shift
MCQ (Single Correct Answer)
+4
-1

An infinitely long positively charged straight thread has a linear charge density $$\lambda \mathrm{~Cm}^{-1}$$. An electron revolves along a circular path having axis along the length of the wire. The graph that correctly represents the variation of the kinetic energy of electron as a function of radius of circular path from the wire is :

A
JEE Main 2024 (Online) 4th April Morning Shift Physics - Electrostatics Question 12 English Option 1
B
JEE Main 2024 (Online) 4th April Morning Shift Physics - Electrostatics Question 12 English Option 2
C
JEE Main 2024 (Online) 4th April Morning Shift Physics - Electrostatics Question 12 English Option 3
D
JEE Main 2024 (Online) 4th April Morning Shift Physics - Electrostatics Question 12 English Option 4
3
JEE Main 2024 (Online) 1st February Evening Shift
MCQ (Single Correct Answer)
+4
-1
Change Language
$C_1$ and $C_2$ are two hollow concentric cubes enclosing charges $2 Q$ and $3 Q$ respectively as shown in figure. The ratio of electric flux passing through $C_1$ and $C_2$ is :

JEE Main 2024 (Online) 1st February Evening Shift Physics - Electrostatics Question 33 English
A
$3: 2$
B
$5: 2$
C
$2: 5$
D
$2: 3$
4
JEE Main 2024 (Online) 31st January Evening Shift
MCQ (Single Correct Answer)
+4
-1
Change Language

Force between two point charges $$q_1$$ and $$q_2$$ placed in vacuum at '$$r$$' cm apart is $$F$$. Force between them when placed in a medium having dielectric constant $$K=5$$ at '$$r / 5$$' $$\mathrm{cm}$$ apart will be:

A
$$5 F$$
B
$$25 F$$
C
$$F / 5$$
D
$$F / 25$$
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