Download App

STD 12 - 2. Electric potential and capacitance — NEET STD 11 Science — Question

Gujarat BoardEnglish MediumSTD 11 ScienceNEETSTD 12 - 2. Electric potential and capacitance4 Marks
Question
An empty thick conducting shell of inner radius $a$ and outer radius $b$ is shown in figure.If it is observed that the inner face of the shell carries a uniform charge density $-\sigma$ and the surface carries a uniform charge density $ '\sigma '$

If a point charge $q_A$ is placed at the center of the shell, then choose the correct statement $(s)$

✓

Answer

Get the step-by-step solution for this question inside the Vidyadip app.

Get the answer in the app

Need a full question paper?

Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.

Start Generating Free

Explore more

NEET STD 11 Science question papers→Gujarat Board STD 11 Science question papers→Gujarat Board question paper generator→

Similar questions

In the given figure the magnetic flux through the loop increases according to the relation $\phi_{B}(t)=10 t^{2}+20 t$, where $\phi_{B}$ is in milliwebers and $t$ is in seconds.

The magnitude of current through ${R}=2 \,\Omega$ resistor at ${t}=5\, {s}$ is $....\,{mA}$.

→
How many $60 \,W$ bulbs may be safely run on $220 \,V$ using a $5 \,A$ fuse is .........
→
In arrangement given in figure, if the block of mass m is displaced, the frequency is given by
→
Six charges are placed at the corner of a regular hexagon as shown. If an electron is placed at its centre $O$, force on it will be:
→
A charge $Q$ is uniformly distributed over a large square plate of copper. The electric  field at a point very close to the centre of the plane is $10\, V/m$. If the copper plate is  replaced by a plastic plate of the same geometrical dimensions and carrying the same  charge $Q$ uniformly distributed, then the electric field at the point $P$ will be......$V/m$
→
For the given figure find acceleration of $40\, kg$ block ........ $m/s^2$ 
→
A diatomic gas with rigid molecules does $10\, J$ of work when expanded at constant pressure. What would be the heat energy absorbed by the gas, in this process ..... $J$.
→
A triode whose mutual conductance is $2.5 m$$ A/volt$  and anode resistance is $20 kilo ohm$, is used as an amplifier whose amplification is $10$. The resistance connected in plate circuit will be.....$k\Omega$
→
Statement $I :$ A cyclist is moving on an unbanked road with a speed of $7\, kmh ^{-1}$ and takes a sharp circular turn along a path of radius of $2 \,m$ without reducing the speed. The static friction coefficient is $0.2$ . The cyclist will not slip and pass the curve $\left( g =9.8\, m / s ^{2}\right)$

Statement $II :$ If the road is banked at an angle of $45^{\circ}$, cyclist can cross the curve of $2\, m$ radius with the speed of $18.5\, kmh ^{-1}$ without slipping.

In the light of the above statements, choose the correct answer from the options given below.

→
The focal lengths of convex lens for red and blue light are $100 cm$ and $96.8 cm$ respectively. The dispersive power of material of lens is
→