Physics
Water is lifted from ground floor to overhead tank at the second floor. The work done is stored in the form of :
- kinetic energy
- chemical energy
- potential energy
- both kinetic energy and chemical energy
Work, Energy & Power
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Answer
potential energy
Reason — When water is lifted from the ground floor to an overhead tank, work is done against gravity which gets stored in the water in the form of gravitational potential energy due to its increased height.
It is not kinetic energy because the water is not in motion when stored, and it is not chemical energy since no chemical change occurs.
Hence, the work done is stored in the form of potential energy.
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Related Questions
The correct statement is
- Both work and energy have the same units
- Potential energy of a body is due to its motion
- Kinetic energy of a body is due to its position or state
- Kinetic energy can change into potential energy, but potential energy cannot change into kinetic energy
According to law of conservation of energy, energy changes from one form to another form, but the total energy of that system
- increases
- decreases
- alternates
- remains the same
Assertion (A): Mechanical energy of a freely falling body increases as it falls.
Reason (R): Potential energy is converted into kinetic energy during free fall.
- Both A and R are true and R is the correct explanation of A
- Both A and R are true and R is not the correct explanation of A
- A is true but R is false
- A is false but R is true
Assertion (A): A stretched bow has kinetic energy.
Reason (R): Stretching stores potential energy.
- Both A and R are true and R is the correct explanation of A
- Both A and R are true and R is not the correct explanation of A
- A is true but R is false
- A is false but R is true