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1.

Assertion: Magnetic field can not change the kinetic energy of moving charges. Reason: Magnetic field can not change velocity vector.A. If both the assertion and reason are true and reason is a true explantion of the assertion.B. If both the assertion and reason are true but the reason is not the correct explantion of the assertion.C. If the assertion is true but reason falseD. If both the assertion and reason are false.

Answer» Correct Answer - C
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