The device that uses the principle of electromagnetic induction is MCQ with Answer and Explanation
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The relative permeability of a ferromagnetic material is
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The device which converts mechanical energy into electrical energy is
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Spring-mass period in orbiting satellite:
Correct Answer: Option C
Explanation:
T = 2π√(m/k): depends on mass and spring constant only, not gravity. Weightlessness doesn't affect spring force. Memory aid: 'Spring period: independent of g; pendulum period: depends on g'. Oscillations concept frequently tested in competitive exams.
T = 2π√(m/k): depends on mass and spring constant only, not gravity. Weightlessness doesn't affect spring force. Memory aid: 'Spring period: independent of g; pendulum period: depends on g'. Oscillations concept frequently tested in competitive exams.
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