Questions
Two poles separated by 10 cm experiences a force of 5 mN. Find the force between them when the distance is doubled and the pole strengths are doubled
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Correct option is A
Fαm2d2⇒FfFi=4m24d2/m2d2=1Similar Questions
The half life period of a radioactive element X is same as the mean life time of another radioactive element Y. Initially both of them have the same number of atoms. Then
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