Advertisements
Advertisements
प्रश्न
How does photocurrent vary with the intensity of the incident light?
उत्तर
Photocurrent – The number of electrons emitted per second is directly proportional to the intensity of the incident light.
APPEARS IN
संबंधित प्रश्न
When a metallic surface is illuminated with radiation of wavelength λ, the stopping potential is V. If the same surface is illuminated with radiation of wavelength 2λ, the stopping potential is `"V"/4`. The threshold wavelength for the metallic surface is
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
Give the definition of intensity of light according to quantum concept and its unit.
How will you define threshold frequency?
Mention the different types of photocells.
Mention the two features of x-ray spectra, not explained by classical electromagnetic theory.
List out the characteristics of photons.
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.