The mid points of two small magnetic dipoles of length d in end-on positions, are separated by a distance x, (x d). The force between them is proportional to x-n where n is:

Question

The mid points of two small magnetic dipoles of length d in end-on positions, are separated by a distance x, (x > > d). The force between them is proportional to x-n where n is: (A) 1 (B) 2 (C) 3 (D) 4

Tardigrade Admin · Accepted Answer

In magnetic dipole Force propto (1/r4) In the given question, Force propto x-n Hence , n = 4

Q. The mid points of two small magnetic dipoles of length d in end-on positions, are separated by a distance x, (x > > d). The force between them is proportional to $x^{- n}$ where n is:

1

2

3

4

In magnetic dipole
Force $\propto \frac{1}{r ^{4}}$
In the given question,
Force $\propto x^{- n}$
Hence , n = 4

Q. The mid points of two small magnetic dipoles of length d in end-on positions, are separated by a distance x, (x > > d). The force between them is proportional to x−n where n is:

1

2

3

4

In magnetic dipole Force ∝r41​ In the given question, Force ∝x−n Hence , n = 4

Q. The mid points of two small magnetic dipoles of length d in end-on positions, are separated by a distance x, (x > > d). The force between them is proportional to $x^{- n}$ where n is:

In magnetic dipole
Force $\propto \frac{1}{r ^{4}}$
In the given question,
Force $\propto x^{- n}$
Hence , n = 4