Question

Pressure force on the 15 cm diameter headlight of an automobile travelling at 0.25 m/s is

Answer 1

The momentum of a photon is h/lambda, after which one gets the force from the impulse momentum theorem, and hence the pressure P=2I/c

So that Pressure force 'll be generated as a result of heat energy liberated due to battery.Heat liberated is proportional to pressure force then 6.8 N pressure applied on it.