Question

23.The length of each fictitious poles
of a bar magnet. The pole strength
of a magnet is 500 Am and the
magnetic moment of the magnet is
25 Am^2 is....​

Answer 1

Answer:

Correct option is

A

6 cm

Pole strength=m=80Am

Magnetic moment=M=4Am2

let magnetic length=lm

geometric length=lg

But,

M=m.lm

∴4=80×lm

∴lm=4/80=0.05m=5cm

But,

lm=65lg

∴5=65lg

∴ Geometric length =lg=6cm

Answer 2

Explanation:

Land use involves the management and modification of natural environment or wilderness into built environment such as settlements and semi-natural habitats such as arable fields, pastures, and managed woods.