3. Convex lens can burn a piece of paper without a match stick
The word 'AMBULANCE' is written backwards
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The word ambulance is written backwards caz .If the ambulance is in emergency and has to move people can see it with their mirrors and give way
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1convex lenses concentrates the light energy to one spot on the paper so that the heat energy accumulates on that one small spot of paper . as the heat increases, combustion will occur when the spot becomes too hot and the paper will burn.
2 because the ambulance is in and has to move people can see it with their mirrors and give way
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