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Sun Burning wood Gas
2. Light Energy:
Light is another important form of energy. The sun is the main and natural source of
light energy on the earth. Other sources of light energy include bulb, lantern, candle,
electricity, etc.
Lantern Candle Bulb
3. Chemical Energy:
Chemical energy is obtained by chemical reaction. For example, dry cell has
chemical energy in it.
Petroleum Dry cell
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