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An iron rod of length 20 cm and diameter...

An iron rod of length 20 cm and diameter 1 cm is placed inside a solenoid on which the number of turns is 600.The relative permeability of the rod is 1000. If a current of 0.5 A is passed in the solenoid, then the magnetisation of the rod will be

A

`2.997 xx 10^2 A/m`

B

`2.997 xx 10^3 A/m`

C

`2.997 xx 10^4 A/m`

D

`2.997 xx 10^5 A/m`

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