Light of intensity I falls along the axis on a perfectly refleccting right circular cone having semi-vertical angle `theta` and base radius R. If E is the energy of one photon and c is the speed oh light, then find
Q. the number of photons hitting the cone per second

Light of intensity I falls along the axis on a perfectly reflecting right circular cone having semi-vertical angle theta and base radius R. If E is the energy of one photon and c is the speed oh light, then find the number of photons hitting the cone per second

Light of intensity I falls along the axis on a perfectly refleccting right circular cone having semi-vertical angle theta and base radius R. If E is the energy of one photon and c is the speed oh light, then find Q. The net force of the cone.

Light of intensity I falls along the axis on a perfectly refleccting right circular cone having semi-vertical angle theta and base radius R. If E is the energy of one photon and c is the speed oh light, then find Q. The net force of the cone.

The radius of the base of a right circular cone of semi-vertical angle alpha is r . Show that its volume is 1/3pir^3 cotalpha and curved surface area is pir^2 cos e s alphadot

The radius of the base of a right circular cone of semi-vertical angle alpha is r .Show that its volume is (1)/(3)pi r^(3) cot alpha and curved surface area is pi r^(2) coses alpha.

Violet light (lambda=4000A ) of intensity 4watt/m^(2) falls normally on a surface of area 10cm xx 20cm .Find (i) the energy received by the surface per second.(ii) the number of photons hitting the surface the surface per second,(iii) If surface is titled such that plane of the surface makes an angle 30^(@) with light beam, find the number of photons hitting the surface per second.

Violet light (lambda=4000A ) of intensity 4watt/m^(2) falls normally on a surface of area 10cm xx 20cm .Find (i) the energy received by the surface per second.(ii) the number of photons hitting the surface the surface per second,(iii) If surface is titled such that plane of the surface makes an angle 30^(@) with light beam, find the number of photons hitting the surface per second.

A source emits monochromatic light of frequency 5.5xx10^(14) Hzat a rate of 0.1 W. Of the photons given out, 0.15% fall on the cathode of a photocell which gives a current of 6muA in an extrnal circuit. (a) Find the enrgy of a photon. (b) Find the number of photons leaving the source per second. (C) Find the percentage of the photons falling on the cathode which produce photoelectrons.

A source emits monochromatic light of frequency 5.5xx10^(14) Hzat a rate of 0.1 W. Of the photons given out, 0.15% fall on the cathode of a photocell which gives a current of 6muA in an extrnal circuit. (a) Find the enrgy of a photon. (b) Find the number of photons leaving the source per second. (C) Find the percentage of the photons falling on the cathode which produce photoelectrons.