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प्रश्न
Give one relevant example for the following transformations of energy:
Chemical energy to heat energy.
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उत्तर
Burning of wood, coal etc.
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संबंधित प्रश्न
Name five different forms of energy.
Name the type of energy (kinetic or potential) possessed by the following:
Water flowing in a river.
Give one relevant example for the following transformation of energy:
Electrical energy to mechanical energy.
Give one relevant example for the following transformation of energy :
Chemical energy to light energy.
State the energy transformation on the following:
Electricity is obtained from hydro energy.
A hydroelectric power station takes its water from a lake whose water level is 50 m above the turbine. Assuming an overall efficiency of 40%, calculate the mass of water which must flow through the turbine each second to produce power output of 1 MW. (Take g = 10 m s−2).
Write the type of energy possessed in the following case:
A wound-up spring
State the energy changes which take place when:
Water freezes in the freezing chamber of a fridge.
Use your brain power!
How do we save fuel by using public transport?
You do not have rangoli powder. What things can you use as an alternative?
