Ans: It is given that the atoms of 
are present at the corners of the cube. Therefore, number of atoms of 
in one unit cell 
It is also given that the atoms of 
are present at the body-centre.
Therefore, number of atoms of 
in one unit cell 
This means that the ratio of the number of atoms to the number of atoms, 
Hence, the formula of the compound is 
The coordination number of both and is 8 .
A cubic solid is made of two elements and 
Atoms of are at the corners of the cube and at the body-centre. What is the formula of the compound? What are the coordination numbers of and 
and Atoms of are at the corners of the cube and at the body-centre. What is the formula of the compound? What are the coordination numbers of and A cubic solid is made of two elements and Atoms of are at the corners of the cube and at the body-centre. What is the formula of the compound? What are the coordination numbers of and
and Atoms of are at the corners of the cube and at the body-centre. What is the formula of the compound? What are the coordination numbers of and 
.
)
west of the geographic north. The north tip of the magnetic needle of a dip circle placed in the plane of magnetic meridian points above the horizontal. The horizontal component of the earth’s field is measured to be 
Specify the direction and magnitude of the earth’s field at the location.At a certain location in Africa, a compass points 
and 
carrying currents of 
and 
in the same direction are separated by a distance of 
. Estimate the force on a 
section of wire A.
wire carrying a current of 
is placed inside a solenoid perpendicular to its axis. The magnetic field inside the solenoid is given to be 
. What is the magnetic force on the wire?
and making an angle of 
with the direction of a uniform magnetic field of 
. What is the magnitude of the field 
at a point 
from the wire?
-turns carrying current 
.
is at distance 
from the wire. Find the force acting on the electron if its velocity is directed towards the wire.