Question : A wound watch spring has ____ energy.

Option 1: electrical

Option 2: kinetic

Option 3: potential

Option 4: both kinetic and potential

Question : dynamo is a device for converting 

Option 1: heat energy into electrical energy

Option 2: mechanical energy into electrical energy

Option 3: megnetic energy into electrical energy

Option 4: chemical energy into electrical energy

Question : In which form is the supplied heat energy stored during change in temperature of substance?

Option 1: Heat energy

Option 2: Kinetic energy

Option 3: Potential energy

Option 4: Both kinetic and potential energy

Question : Statement 1: Hydropower is a renewable source of energy that harnesses the energy of flowing or falling water to generate electricity.

Statement 2: Dams and turbines are used to convert the potential and kinetic energy of water into electrical energy.

Option 1: Both statements are true.
 

Option 2: Statement 1 is true, and Statement 2 is false.
 

Option 3: Statement 1 is false, and Statement 2 is true.

Option 4: Both statements are false.

Question : When a body falls from an aeroplane, there is an increase in its 

Option 1: kinetic energy

Option 2: mass

Option 3: acceleration

Option 4: potential energy