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प्रश्न
What are the various forms of energy?
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उत्तर
Energy exists in various forms in our universe. Some of the major forms of energy are:
(i) Kinetic energy
(ii) Potential energy
(iii) Chemical energy
(iv) Heat energy
(v) Light energy
(vi) Sound energy
(vii) Electrical energy
(viii) Nuclear energy
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संबंधित प्रश्न
Show that the sum of kinetic energy and potential energy (i.e., total mechanical energy) is always conserved in the case of a freely falling body under gravity (with air resistance neglected) from a height h by finding it when
- The body is at the top.
- the body has fallen a distance x.
- the body has reached the ground.
State whether the object possess kinetic energy, potential energy, or both :
A ceiling fan in the off position ______________
An iron sphere of mass 10 kg has the same diameter as an aluminium sphere of mass 3.5 kg. Both the spheres are dropped simultaneously from a tower. When they are 10 m above the ground, they have the same :
Name the device or machine which convert :
Chemical energy into electrical energy.
Name the device or machine which convert :
Electrical energy into heat energy.
Name the device or machine which convert :
Light energy into electrical energy.
Name the device or machine which convert :
Electrical energy into light energy.
Name the device or machine which convert :
Heat energy into kinetic energy (or mechanical energy).
Fill in the blanks with suitable words :
The principle of ___________ of energy says energy can be transformed from one form to another, but it cannot be ___________ or ___________.
When an object falls freely towards the earth, then its total energy :
