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प्रश्न
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 ___________.
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उत्तर
The principle of conservation of energy says energy can be transformed from one form to another, but it cannot be created or destroyed.
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संबंधित प्रश्न
In what way does the temperature of water at the bottom of a waterfall differ from the temperature at the top? Explain the reason.
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.
What kind of energy is possessed by the following?
Water stored in the reservoir of a dam __________.
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 :
Water stored in a dam possesses ______.
Name the device which converts electrical energy into mechanical energy.
How much electrical energy in joules does a 100 watt lamp consume : in 1 second?
How much electric energy in kWh is consumed by an electrical appliance of 1000 watts when it is switched on for 60 minutes?
Name the energy transfers which occur when there is a picture on a television screen.
An object is falling freely from a height x. After it has fallen a height `pi/2` , it will possess :
