The energy stored in wound watch spring is
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I) The energy stored in wound watch spring is
a) K.Eb) P.Ec) Heat Energyd) Chemical Energyii) If the stone is thrown up vertically and return to the ground, its potential energy is maximuma) During the upward journeyb) At the maximum heightc) During the return journeyd) At the bottomiii) The potential energy of a simple pendulum will be maximum when it is-a)At the turning point of oscillationb)At equilibriumc)In between above two casesd)Any timeiv) SI unit Of energya) Joulesb) Newtonc)m/sd)metre