Work is said to be done if a force acting on a body is able to actually move it through some distance in the direction of the force. The time rate of doing the work is called power video an object is its capacity for doing work. So take this quiz and know more about the relationship between work power and energy.
1. When work is done on the body.....
A. It gains energy
B. It loses energy
C. Its energy remains constant
D. None of the above
2. When a body Falls freely then the...
A. Its kinetic energy is converted into potential energy
B. Its potential energy is converted into kinetic energy
C. Its mechanical energy is converted into heat energy
D. None of the above
3. The heat energy of an object is...
A. The average energy of the molecules of the object
B. Average velocity of the molecules of the object
C. The total energy of the molecules of the object
D. The average potential energy of the molecules of the object
4. If the velocity of a particle is reduced to half of its initial value, then the kinetic energy of the particle will...
A. Get doubled
B. Becomes four times
C. Reduced to half of its original value
D. Reduced to one fourth of its original value
5. Which one of the following is a scalar quantity?
A. Power
B. Enegry
C. Both of the above
D. Work
6. A bullet fired from a gun pierce a target due to its.....
A. Potential energy
B. Kinetic energy
C. Mechanical energy
D. Electrical energy
7. Who proved the relation between mass and energy?
A. Einstein
B. Newton
C. Both of the above
D. None of the above
8. In an electrical heater, the electric energy is converted into...
A. Light energy
B. Magnetic energy
C. Heat Enegry
D. All of the above
Drop your comment here...
