Advertisements
Advertisements
Question
Define stopping potential.
Advertisements
Solution
The minimum negative potential given to the anode of a photo-cell for which the photoelectric current becomes zero is called stopping potential.
APPEARS IN
RELATED QUESTIONS
In photoelectric emission, a radiation whose frequency is 4 times threshold frequency of a certain metal is incident on the metal. Then the maximum possible velocity of the emitted electron will be
A light source of wavelength 520 nm emits 1.04 × 1015 photons per second while the second source of 460 nm produces 1.38 × 1015 photons per second. Then the ratio of power of second source to that of first source is
How will you define threshold frequency?
Explain the effect of potential difference on photoelectric current.
Explain the quantum concept of light.
Obtain Einstein’s photoelectric equation with the necessary explanation.
Explain experimentally observed facts of the photoelectric effect with the help of Einstein’s explanation.
Give the applications photocell.
How many photons of frequency 1014 Hz will make up 19.86 J of energy?
A 3310 Å photon liberates an electron from a material with energy 3 × 10−19 J while another 5000 Å photon ejects an electron with energy 0.972 × 10−19 J from the same material. Determine the value of Planck’s constant and the threshold wavelength of the material.
