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14. Sources of Energy
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Q24 of 141 Page 14

Why is the use of wood as a fuel not advised although forests can be replenished?

Wood produces a lot of smoke on burning and pollutes the air. Hence it is advised not to use it as a fuel.

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22 Explain why fossils fuels are classified as non-renewable sources of energy. 23 Name any two renewable sources of energy. 25 How much solar energy will be received by 1m2 area in one hour, if the solar constant were 1.4 kilowatt per square metre? 26 What is the range of the wavelength of electromagnetic waves that constitutes visible radiation?
Questions · 141
14. Sources of Energy
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