Questions with detailed step by step solutions from Optics

Questions in Optics
  1. That the photons possess momentum was proved by
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  2. In vacuum, speed of light depends upon
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  3. The nature has selected electromagnetic waves of wavelength between 400 nm to 800 nm for human vision. Which of the following could be the most suitable reason for this selection?
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  4. A star appears yellow. If it starts accelerating towards the earth, how will its colour appear to change ?
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  5. Which of the following generates a plane wave front?
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  6. We may state that the energy $(E)$ of a proton of frequency $v$ is $E=hv$, where $h$ is Planck's constant. The momentum $p$of a photon is $p=\frac{h}{\lambda }$, where $\lambda $ is the wave length of the photon. From the above statement one may conclude that the wave velocity of light is equal to
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  7. Given Planck's constant$h=6.6\times {{10}^{-34}}\,\text{Js}$. The momentum of each photon in a given radiation is $3.3\times {{10}^{-29}}$ kgm/s. The frequency of radiation is
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  8. Which of the following is not property of the photons?
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  9. What is the momentum of a photon having frequency $1.5\times {{10}^{13}}\,\text{Hz}$?
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  10. The wavelength of a 1 keV photon is $1.24\times {{10}^{-9}}$. What is the frequency of 1MeV photon?
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