A domain in ferromagnetic iron is in the form of a cube of side length 
. Estimate the number of iron atoms in the domain. The molecular mass of iron is 
and its density is 
.
A
atoms B
atoms C
atoms D
atoms
Text Solution
Verified by ExpertsThe correct answer is:
D
The volume of cubic domain is
It is given that Avogadro's number i.e. 
of iron atoms have a mass of 55 g. Hence, the number of atoms in the domain,
N 
Prepare Smarter with CGP Edu
Get practice questions, solutions, and test series in one place.
Write a Review
Share your experience with this question and solution.
Commentary
Send your comment, doubt, correction, or feedback to admin.
Similar Questions
Explore conceptually related problems
If a rod of length L and magnetic moment M bent into a semicircular arc, then new magnetic moment w…
It is found that work done in turning a magnet by angle from magnetic meridian is n times the work…
A planar coil having 15 turns carries 20 A current. The coil is oriented with respect to the unifor…
A bar magnet has a coercivity of . It is placed inside a solenoid of length 12 cm having 60 turns …
A paramagnetic sample shows a net magnetization of , when placed in an external magnetic field of …
Which of the following is a vector quantity?