When there is no dielectric, the value of capacitance of a capacitor is $C$. Now some dielectrics are inserted in this capacitor as shown in the diagram. If the new capacitance becomes $\dfrac{nC}{3}$, then find the value of $n$ to the nearest integer 
There are two point charges, one at the vertex and the other at the face centre as shown on the cube. Find the electric flux through the cube: 


Which of the following is a sedimentary rock?
Mantri Mandir -- Where is it located?
Count the no of surfaces