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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
Which of the following produces more heat (per unit mass) on burning?
Select the renewable and non-renewable sources of energy from the following:
Coal
What is ocean? Explain in brief.
Give one disadvantage of using a solar cell.
Renewable source of energy is:
Calculate the decrease in the kinetic energy of a moving body if its velocity reduces to half of the initial velocity.
What kind of energy is possessed in a situation when?
A cocked up spring of air gun.
State the energy changes which take place when:
A magnesium ribbon burns in air.
A body of mass 50 kg has a momentum of 3000 kg−1 ms. Calculate:
(j) the kinetic energy of the body.
(ii) the velocity of the body.
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