Question

Two magnets are held together in a vibration magnetometer
and are allowed to oscillate in the earth’s magnetic field with
like poles together. 12 oscillations per minute are made but
for unlike poles together only 4 oscillations per minute are
executed. The ratio of their magnetic moments is
(a) 3 : 1 (b) 1 : 3 (c) 3 : 5 (d) 5 : 4

Answer 1

Answer:

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Explanation:

Answer 2

Answer:

d) 5:4

Explanation:

in the sum and difference method of vibratioon magnetometer:.

M1/M2=T2²+T1²/T2²-T1²

Here,T1=1/n1=60/12=5 sec.

T2=1/n2=60/4=15 sec.

so,M1/M2=15²+5²/15²-5²=5:4

Hope it helps you.