Class IX

. The spring will have maximum potential energy when
  1. it is pulled out
  2. it is compressed
  3. both (a) and (b)
  4. neither (a) nor (b)
If the velocity of a body is doubled its kinetic energy
  1. gets doubled
  2. becomes half
  3. does not change
  4. becomes 4 times
The spring will have maximum potential energy when
  1. it is pulled out
  2. it is compressed
  3. Both a and b
  4. niether a nor b
the velocity of a body is doubled its kinetic energy
  1. gets doubled
  2. becomes half
  3. does not change
  4. becomes 4 times
The energy possessed by an oscillating pendulum of a clock is
  1. kinetic energy
  2. potential energy
  3. restoring energy.
  4. mechanical energy
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