The momentum of a photon of energy $1\,\, MeV$ in $kg \,\,m/s$ will be
The momentum of a photon of energy $1\,\, MeV$ in $kg \,\,m/s$ will be
- [AIPMT 2006]
- A
$5 \times 10^{-22}$
- B
$0.33 \times 10^6$
- C
$7 \times 10^{-24}$
- D
$10^{-22}$
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The frequency of a photon, having energy $100eV$ is$(h = 6.6\,{10^{ - 34}}\,J{\rm{ - }}sec)$
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According to Einstein's photoelectric equation, the graph between the kinetic energy of photoelectrons ejected and the frequency of incident radiation is
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- [AIPMT 2004]
The momentum of a photon in an $X-$ ray beam of ${10^{ - 10}}$ metre wavelength is
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There are two sources of light, each emitting with a power of $100 \,W.$ One emits $X-$ rays of wavelength $1\, nm$ and the other visible light at $500\, nm$. Find the ratio of number of photons of $X-$ rays to the photons of visible light of the given wavelength ?
There are two sources of light, each emitting with a power of $100 \,W.$ One emits $X-$ rays of wavelength $1\, nm$ and the other visible light at $500\, nm$. Find the ratio of number of photons of $X-$ rays to the photons of visible light of the given wavelength ?