1
JEE Advanced 2013 Paper 1 Offline
MCQ (Single Correct Answer)
+4
-1
Two non-conducting solid spheres of radii $$R$$ and $$2R,$$ having uniform volume charge densities $${\rho _1}$$ and $${\rho _2}$$ respectively, touch each other. The net electric field at a distance $$2$$ $$R$$ from the center of the smaller sphere, along the line joining the centers of the spheres, is zero. The ratio $${{{\rho _1}} \over {{\rho _2}}}$$ can be
A
$$-4$$
B
$$ - {{32} \over {25}}$$
C
$$ {{32} \over {25}}$$
D
$$4$$
2
IIT-JEE 2012 Paper 1 Offline
MCQ (Single Correct Answer)
+4
-1
Two large vertical and parallel metal plates having a separation of $$1$$ $$cm$$ are connected to a $$DC$$ voltage source of potential difference $$X$$. A proton is released at rest midway between the two plates. It is found to move at $${45^ \circ }$$ to the vertical JUST after release. Then $$X$$ is nearly
A
$$1 \times {10^{ - 5}}\,\,V$$
B
$$1 \times {10^{ - 7}}\,\,V$$
C
$$1 \times {10^{ - 9}}\,\,V$$
D
$$1 \times {10^{ - 10}}\,\,V$$
3
IIT-JEE 2012 Paper 1 Offline
MCQ (Single Correct Answer)
+4
-1
Consider a thin spherical shell of radius $$R$$ with center at the origin, carrying uniform positive surface charge density. The variation of the magnitude of the electric field $$\left| {\overrightarrow E \left( r \right)} \right|$$ and the electric potential $$V(r)$$ with the distance $$r$$ from the center, best represented by which graph?
A
IIT-JEE 2012 Paper 1 Offline Physics - Electrostatics Question 49 English Option 1
B
IIT-JEE 2012 Paper 1 Offline Physics - Electrostatics Question 49 English Option 2
C
IIT-JEE 2012 Paper 1 Offline Physics - Electrostatics Question 49 English Option 3
D
IIT-JEE 2012 Paper 1 Offline Physics - Electrostatics Question 49 English Option 4
4
IIT-JEE 2011 Paper 1 Offline
MCQ (Single Correct Answer)
+2
-0.5
Consider an electric field $$\overrightarrow E = {E_0}\widehat x$$ where $${E_0}$$ is a constant. The flux through the shaded area (as shown in the figure) due to this field is
IIT-JEE 2011 Paper 1 Offline Physics - Electrostatics Question 52 English
A
$$2{E_0}{a_2}$$
B
$$\sqrt 2 {E_0}{a^2}$$
C
$${E_0}\,{a^2}$$
D
$${{{E_0}{a^2}} \over {\sqrt 2 }}$$
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