By how much would the stopping potential for a given photosensitive surface go up, if the frequency f the incident radiations were to be in creased from `4 xx 10^(15) Hz` to `8 xx 10^(15) Hz`?

By how much will the potential of a zinc electrode change if the solution of ZnSO_4 in which it is immersed is dilute to 10 times at 298K?

Sketch a graph between frequency of incident radiations and stopping potential for a given photosensitive material. What information can be obtained from the value of the intercept of potential axis? A source of light of frequency of greater than the threshold freuency is placed at a distance of 1 m from the cathode of a photocell? the distnace of hte light sources from the cathode is reduced explain giving reasons, what change will you observe in the Stopping potential.

Calculate the number of photons in 6.62 J of radiation energy of frequency 10^(12) Hz. Given h=6.62 xx 10^(-34) Js.

What should be the length of dipole antenna for a carrier wave of frequency 8 xx 10^8 Hz ?

What should be the length of dipole antenna for a carrier wave of frequency 12 xx10^8 Hz ?

What is the electric potential at the surface of an iron nucleus? The radius of the nucelus is 4.2 xx 10^-15 m and the atomic number is 26.

What should be the length of dipole antenna for a carrier wave of frequency 6 xx10^8 Hz ?