The sum of all forms of molecular energies (kinetic and potential) of a substance is termed as:
Correct answer: C. Internal energy
- A. Elastic energy
- B. Absolute energy
- C. Internal energy
- D. Heat energy
Explanation
Elastic energy is a form of potential energy. Absolute energy does not exist. By definition, Internal energy is the sum of total kinetic and potential energy as defined in 1st law of thermodynamics.
Report an error
The more specific you are, the faster it gets fixed. A source beats an opinion.
Prefer email? [email protected]
About Work and Energy
Work transfers energy when a force causes displacement, while kinetic energy, gravitational potential energy and power describe motion, position and the rate of energy transfer. The work-energy theorem links net work with change in kinetic energy, and efficiency accounts for energy losses rather than treating them as energy destruction.
Practise Work and Energy
750 free Work and Energy MCQs from Physics, each with the correct answer and an explanation. Unlimited attempts, no account needed.
Discussion
Stuck on an option, or know a faster way to get there? Ask or explain it here.
No comments yet. Be the first to explain this one.
Exams that ask Physics questions like this
Physics is on 16 papers prepared for on TestUstad, and all of them draw the same bank, so this question is worth knowing for every one of them.
More Work and Energy questions
Kilowatt-hour is a unit of:
A neutron travels a distance of 24 m in a time interval of 3.6 x 10^-4 s. Assuming its speed was constant, find its kinetic energy. Take 1.7 x 10^-27 kg as the mass of the neutron:
Coal and petrol are stores of chemical energy when are burnt, chemical energy is converted into heat energy i.e chemical energy = heat energy + _:
Energy consumed by 60 watt bulb in 2 minutes is equal to:
The K.E. of a body of mass 2kg and momentum of 2Ns is:
Which is the unit of energy: