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Light of intensity I falls along the axis on a perfectly reflecting right circular cone having semi -vertical angle thetha and base radius R.if E is the energy of one photon and c is the speed of light,then find The number of photos hitting the cone per second. Net force on the cone |
| Answer» Light of intensity I falls along the axis on a perfectly reflecting right circular cone having semi -vertical angle thetha and base radius R.if E is the energy of one photon and c is the speed of light,then find The number of photos hitting the cone per second. Net force on the cone | |