How does K.E. of photoelectrons change when the intensity of radiation is increased?

Assuming photoemission to take place , the factor by which the maximum velocity of the emitted photoelectrons changes when the wavelength of the incident radiation is increased four times , is

What is the effect on the maximum kinetic energy and the numver of photoelectrons when (i) The intensity of incident light decreases. (ii) The emitting surcac is charged. (iii) Wavelength of incident light increase.

Explain giving reasons for the following : (a) Photoelectric current in a photocell increases with the increase in intensity of the incident radiation. (b) The stopping potential V_0 varies linearly with the frequency nu of the incident radiation for a given photosensitive surface with the slope remaining the same for different surfaces. (c) Maximum kinetic energy of the photoelectrons is independent of the intensity of incident radiation.

How does the water potential of a cell change if the solute concentration is increased in it?

Write the cell reaction of a lead storage battery when it is discharged. How does the density of the electrolyte change when the battery is discharged?

(A): With increase of intensity of incident light, photoelectric current also increases. (R): If the intensity of incident radiation is increased, more number of photons strike the metal surface there by liberating more photoelectrons. Then photoelectric current increases.

Maximum kinetic energy (E_(k)) of a photoelectron varies with the frequency (v) of the incident radiation as

Threshold frequency for a certain metal is v_0 . When light of frequency 2v_0 is incident on it, the maximum velocity of photoelectrons is 4xx10^8 cm s^-1 . If frequency of incident radiation is increased to 5v_0 , then the maximum velocity of photoelectrons, in cm s^-1 , will be

A metal surface is illuminated by a light of given intensity and frequency to cause photoemission. If the intensity of illumination is reduced to one-fourth of its original value, then the maximum KE of emitted photoelectrons will become.

A, B, C are identical bulbs. How does the brightness of A and B change when the switch S is closed ?