When a car engine burns petrol to move the car forward along with turning on its headlights, which sequence…

When a car engine burns petrol to move the car forward along with turning on its headlights, which sequence of energy transformations primarily takes place?
  1. Light energy -> Chemical energy -> Kinetic energy
  2. Chemical energy -> Heat energy -> Kinetic energy and Light energy
  3. Kinetic energy -> Chemical energy -> Heat energy
  4. Potential energy -> Sound energy -> Chemical energy

Solution

Petrol contains chemical energy, which burns to produce heat energy, which is then converted into kinetic energy for motion and light energy for headlights.

Asked in: Homi Bhabha Practice

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