A photon of wavelength $4400 \, \mathring A$ is passing through vacuum. The effective mass and momentum of the photon are respectively
- A$5 \times {10^{ - 36}}kg,\,\,1.5 \times {10^{ - 27}}\,kg{\rm{ - }}m/s$
- B$5 \times {10^{ - 35}}kg,\,\,1.5 \times {10^{ - 26}}\,kg{\rm{ - }}m/s$
- CZero, $1.5 \times {10^{ - 26}}\,kg{\rm{ - }}m/s$
- D$5 \times {10^{ - 36}}kg,\,1.67 \times {10^{ - 43}}kg{\rm{ - }}m/s$
Similar Questions
The work function of aluminium is $4.2eV.$ If two photons, each of energy $3.5 eV$strike an electron of aluminium, then emission of electrons will be
The work function of aluminium is $4.2eV.$ If two photons, each of energy $3.5 eV$strike an electron of aluminium, then emission of electrons will be
If mean wavelength of light radiated by $100 W$ lamp is $5000 \mathring A$, then number of photons radiated per second are
One day on a spacecraft corresponds to $2$ days on the earth. The speed of the spacecraft relative to the earth is
One day on a spacecraft corresponds to $2$ days on the earth. The speed of the spacecraft relative to the earth is
According to Einstein's photoelectric equation, the graph between the kinetic energy of photoelectrons ejected and the frequency of incident radiation is
According to Einstein's photoelectric equation, the graph between the kinetic energy of photoelectrons ejected and the frequency of incident radiation is
- [AIPMT 2004]
Find the number of photons emitted per second by a $25$ watt source of monochromatic light of wavelength $6600 \mathring A$. What is the photoelectric current assuming $3 \%$ efficiency for photoelectric effect?
Find the number of photons emitted per second by a $25$ watt source of monochromatic light of wavelength $6600 \mathring A$. What is the photoelectric current assuming $3 \%$ efficiency for photoelectric effect?