Question

state the energy conversions taking place in following cases :- loudspeaker,combustion of petrol,photosynthesis.

Answer 1

In loud speker==》Electrical to Sound
In combustion==》chemical to Heat+light
In photosynthesis==》light to chemical

Answer 2

loudspeaker ⇒ Electric energy → Sound energy

Combustion of petrol ⇒ Chemical energy +Heat energy → Mechanical energy

Photosynthesis ⇒ Light energy → chemical energy.

Hope this helps you.