Human skin is relatively insensitive to visible light, but ultraviolet radiation can cause severe burns. Does this have anything to do with photon energies? Explain

Can visible light be able to emit an electron bound in a metal having binding energy of 4eV?

Microscopes in which object is illuminated by ultraviolet light can give higher magnifications than the icroscopes that use visible light. how do you explain this?

Cesium shows photoelectric effect with visible Iight while zinc shows the effect with ultraviolet light. Does this mean that cesium will not show the effect with ultraviolet light and zinc with visible light. Explain.

If 5% of the energy supplied to an incandescent light bulb is radiated as visible light, how may visible light photons are emitted by a 100W bulb? Assume the average wavelength of all visible photons to be 5600Å . Given h=6.25 xx 10^(-34)Js .

If 5% of the energy supplied to an incandescent light bulb is radiated as visible light, how may visible light photons are emitted by a 100W bulb? Assume the average wavelength of all visible photons to be 5600Å . Given h=6.25xx10^(-34)Js .

One litre of mixture of O_2 and O_3 at STP was allowed to react with an excess of acidified solution of KI. The iodine liberated required 40 " mL of " (M)/(10) sodium thiosulphate solution for titration. What is the mass per cent of ozone in the mixture? Ultraviolet radiation of wavelength 300 nm can decompose ozone. Assuming that one photon can decompose one ozone molecule, how many photons would have been required for complete decomposition of ozone in the original mixture?

One litre of mixture of O_2 and O_3 at STP was allowed to react with an excess of acidified solution of KI. The iodine liberated required 40 " mL of " (M)/(10) sodium thiosulphate solution for titration. What is the mass per cent of ozone in the mixture? Ultraviolet radiation of wavelength 300 nm can decompose ozone. Assuming that one photon can decompose one ozone molecule, how many photons would have been required for complete decomposition of ozone in the original mixture?

If 10% of the energy supplied to an incandescent light bulb is radiated as visible light, how many visible light photons are emitted by 200watt bulb? Assume wavelength of all visible photons to be 5000Å. Given h=6.6xx10^(-34)Js .

In termsof biological damage, ionization does more damage when you stand in front of a very weak (low power) beam of X-ray radiation than infront of astronger beam of red light. How does the photon concept explain this paradoxical situation?