If the length of a bar magnet increases, thenA) magnetic induction on the axial line decreasesB) magnetic induction on the equatorial line increases

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A false, B true

A true, B false

A & B both true

A & B both false

answer is D.

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Detailed Solution

BA=μo4π2Mdd1−l22 if l increases, BA increasesBE=μ04πMd2+l23/2 if d increases BE decreases

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