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प्रश्न
Give one relevant example for the following transformation of energy :
Chemical energy to light energy.
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उत्तर
Fire crackers burst
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संबंधित प्रश्न
A certain form of energy which is not sourced directly or indirectly from the sun and does not cause any pollution is very easily converted into electricity. This form of energy is, however, not available everywhere. Moreover, it is technically very difficult and expensive to obtain it. Name the form of energy.
What is meant by the renewable and non-renewable sources of energy? Distinguish between them giving two examples of weach.
Select the renewable and non-renewable sources of energy from the following:
Wood
Why using wood as fuel is not advisable although wood is a renewable source of energy?
State whether a solar cell produces a.c. or d.c.
Show that the quantity 2K/v2 has the unit of mass, where K is the kinetic energy of the body.
Calculate the decrease in the kinetic energy of a moving body if its velocity reduces to half of the initial velocity.
How is kinetic energy possessed by a moving body measured?
Give one example when:
Sound energy changes to electric energy.
You do not have rangoli powder. What things can you use as an alternative?
