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प्रश्न
In a laser tube, all the photons
पर्याय
have same wavelength
have same energy
move in same direction
move with same speed
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उत्तर
move with same speed
All the photons emitted in the laser move with the speed equal to the speed of light (c = 3×108 m/s).
Ideally, the light wave through the laser must be coherent, but in practical laser tubes, there is some deviation from the ideal result. Thus, the photons emitted by the laser have little variations in their wavelengths and energies as well as the directions, but the velocity of all the photons remains same.
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संबंधित प्रश्न
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(ii) Find the relation between three wavelengths λ1, λ2 and λ3 from the energy-level diagram shown below.
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State Bohr's postulate to define stable orbits in the hydrogen atom. How does de Broglie's hypothesis explain the stability of these orbits?
Using Bohr's postulates, derive the expression for the total energy of the electron in the stationary states of the hydrogen atom ?
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How will the energy of a hydrogen atom change if n increases from 1 to ∞?
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[Take, h = 6.6 × 10-34 J-s]
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