
Suppose of light energy is needed by the interior of the human eye to see an object. How many photons of green light are needed to generate this minimum amount of energy?
Given :

Important Questions on Structure of Atom
number of photons of radiation of frequency that must be absorbed in order to melt one ice when the latent heat of fusion of ice is Find value of
Use: Planck's constant

If threshold frequency of metal is and binding energy is of electron. Then find value of .
Use: Planck's constant

Calculate the binding energy per mole when threshold wavelength of photon is
Use: Planck's constant
Round off your answer to the nearest integer.

The reaction between and to form in presence of light is initiated by the photo decomposition of into free atoms (free radicals) by absorption of light. The bond dissociation energy of is If the longest wavelength of the photon that would initiate the reaction is Then find value of
Use: Planck's constant and Avogadro's number

The quantum yield for decomposition of is In an experiment moles of HI are decomposed. If the number of photons absorbed is Then find value of
Use : Avogadro's number



