MCQ
For a given surface the Gauss's law is stated as $\oint E . ds =0$. From this we can conclude that         
  • A
    $E$ is necessarily zero on the surface
  • B
    $E$ is perpendicular to the surface at every point
  • The total flux through the surface is zero
  • D
    The flux is only going out of the surface

Answer

Correct option: C.
The total flux through the surface is zero
The total flux through the surface is zero

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

Similar questions

To get an output Y=1 from the circuit above, the input must be:
Kirchhoff ’s junction rule is a reflection of:
By a surface of a liquid we mean.
Although we can know with great precision the pattern formed by huge numbers of photons passing through the lines on a diffraction grating, we cannot know at all where one single photon will go when it passes through the diffraction grating.
This statement describes the truth revealed by what theory?
Let $\triangle\text{W}_\text{a}$ and $\triangle\text{W}_\text{b}$ be the work done by the systems A and B, respectively, in the previous question.
  1. $\triangle\text{W}_\text{a}>​​\triangle\text{W}_\text{b}$
  2. $\triangle\text{W}_\text{a}=​​\triangle\text{W}_\text{b}$
  3. $\triangle\text{W}_\text{a}<​​\triangle\text{W}_\text{b}$
  4. The relation between $\triangle\text{W}_\text{a}$ and $\triangle\text{W}_\text{b}$ cannot be deduced.
An object placed 10 cm in front of a lens has an image 20 cm behind the lens. What is the power of the lens (in dioptres)(a) 1.5(b) 3.0(c) – 15.0(d) + 15.0
       
A long wire carries a steady current. It is bent into a circle of one turn and the magnetic field at the centre of the coil is $B .$ It is then bent into a circular loop of $n$ turns. The magnetic field at the centre of the coil will be
The resistance in the following circuit is increased at a particular instant. At this instant the value of resistance is $10 \Omega$. The current in the circuit will be now
Diode can work as:
Earth is the source of __________?