Physics
The wavelength of light from the spectral emission line of sodium is 589 nm. Find the kinetic energy at which
07
Jun
The wavelength of light from the spectral emission line of sodium is 589 nm. Find the kinetic energy at which The wavelength of light from the spectral emission line of sodium is 589 nm. Find the kinetic energy at which June 7, 2021 Category: Chapter 11 - Dual Nature of Radiation and Matter , NCERT [...]
What is the (a) momentum, (b) speed and
07
Jun
What is the (a) momentum, (b) speed and (b) speed and What is the (a) momentum June 7, 2021 Category: Chapter 11 - Dual Nature of Radiation and Matter , NCERT Exemplar Class 12 , Physics ,
Calculate the (a) momentum and (b) de-Broglie wavelength of the electrons accelerated through a potential difference of 56 V.
07
Jun
Calculate the (a) momentum and (b) de-Broglie wavelength of the electrons accelerated through a potential difference of 56 V. Calculate the (a) momentum and (b) de-Broglie wavelength of the electrons accelerated through a potential difference of 56 V. June 7, 2021 Category: Chapter 11 - Dual Nature of Radiation and Matter , NCERT Exemplar Class [...]
Light of wavelength 488 nm is produced by an atom laser which is used in the photoelectric effect. When light from this spectral line is incident on the emitter, the stopping potential of photoelectrons is 0.38 V. Find the work function of the material from which the emitter is made.
07
Jun
Light of wavelength 488 nm is produced by an atom laser which is used in the photoelectric effect. When light from this spectral line is incident on the emitter, the stopping potential of photoelectrons is 0.38 V. Find the work function of the material from which the emitter is made. Light of wavelength 488 nm [...]
Light of frequency 7.21×10^14Hz is incident on a metal surface. Electrons with a maximum speed of 6.0×10^5 ms^−1 are ejected from the surface. What is the threshold frequency for photoemission of electrons?
07
Jun
Light of frequency 7.21×10^14Hz is incident on a metal surface. Electrons with a maximum speed of 6.0×10^5 ms^−1 are ejected from the surface. What is the threshold frequency for photoemission of electrons? Find the (a) maximum frequency and June 7, 2021 Category: Chapter 11 - Dual Nature of Radiation and Matter , NCERT Exemplar Class [...]
The work function for a certain metal is 4.2eV. Will this metal give photoelectric emission for incident radiation of wavelength 330 nm?
07
Jun
The work function for a certain metal is 4.2eV. Will this metal give photoelectric emission for incident radiation of wavelength 330 nm? The work function for a certain metal is 4.2eV. Will this metal give photoelectric emission for incident radiation of wavelength 330 nm? June 7, 2021 Category: Chapter 11 - Dual Nature of Radiation [...]
The threshold frequency of a certain metal is 3.3×10^14Hz. If light of frequency 8.2×10^14Hz is incident on the metal, predict the cut off voltage for photoelectric emission.
07
Jun
The threshold frequency of a certain metal is 3.3×10^14Hz. If light of frequency 8.2×10^14Hz is incident on the metal, predict the cut off voltage for photoelectric emission. predict the cut off voltage for photoelectric emission. The threshold frequency of a certain metal is 3.3×10^14Hz. If light of frequency 8.2×10^14Hz is incident on the metal June [...]
A 100 W sodium lamp radiates energy uniformly in all directions. The lamp is located at the centre of a large sphere that absorbs all the sodium light which is incident on it. The wavelength of the sodium light is 589 nm.
07
Jun
A 100 W sodium lamp radiates energy uniformly in all directions. The lamp is located at the centre of a large sphere that absorbs all the sodium light which is incident on it. The wavelength of the sodium light is 589 nm. Find the (a) maximum frequency and June 7, 2021 Category: Chapter 11 - [...]
The energy flux of the sunlight reaching the surface of the earth is 1.388×10^3Wm^−2. How many photons (nearly) per square meter are incident on the earth per second? Assume that the photons in the sunlight have an average wavelength of 550 nm.
07
Jun
The energy flux of the sunlight reaching the surface of the earth is 1.388×10^3Wm^−2. How many photons (nearly) per square meter are incident on the earth per second? Assume that the photons in the sunlight have an average wavelength of 550 nm. Find the (a) maximum frequency and June 7, 2021 Category: Chapter 11 - [...]
In an experiment on photoelectric effect, the slope of the cut off voltage versus frequency of incident light is found to be 4.12×10^−15 Vs. Calculate the value of Planck’s constant.
07
Jun
In an experiment on photoelectric effect, the slope of the cut off voltage versus frequency of incident light is found to be 4.12×10^−15 Vs. Calculate the value of Planck’s constant. In an experiment on photoelectric effect the slope of the cut off voltage versus frequency of incident light is found to be 4.12×10^−15 Vs. Calculate [...]