Objective Questions – Choose the correct answer
1. Energy possessed by fossil fuel is called:
a) Potential energy
b) Kinetic energy
c) Electrical energy
d) Chemical energy
✔ Correct Answer: d) Chemical energy
2. Device that converts electrical energy to heat energy is called:
a) Light bulb
b) Electric iron
c) Electric motor
d) Battery
✔ Correct Answer: b) Electric iron
3. The kinetic energy of an object when its velocity is halved:
a) Is doubled
b) Decreases by 2 times
c) Increases by 4 times
d) Decreases by 4 times
✔ Correct Answer: d) Decreases by 4 times
4. The ultimate source of energy is:
a) Water
b) Sun
c) Wind
d) None of these
✔ Correct Answer: b) Sun
5. Gravitational potential energy =
a) 1/2 mv²
b) mgh
c) 2mgh
d) mv²
✔ Correct Answer: b) mgh
