anonymous
  • anonymous
FAN AND MEDAL 1. Which of the following is correct according to Heisenberg's uncertainty principle? Only the position of the particle can be measured with finite accuracy. It is not possible to measure the position and momentum of the particle simultaneously. Only the momentum of the particle can be measured with finite accuracy. It is not possible to measure the position and momentum of the particle simultaneously with infinite accuracy.
Physics
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SOLVED
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schrodinger
  • schrodinger
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Michele_Laino
  • Michele_Laino
hint: in one dimension the Heisenberg's priciple reads: \[\Delta x \cdot \Delta {p_x} \geqslant \hbar \]
Michele_Laino
  • Michele_Laino
so momentum and position can not be measured both with arbitrary accuracy
anonymous
  • anonymous
@Michele_Laino "It is not possible to measure the position and momentum of the particle simultaneously." ??

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Michele_Laino
  • Michele_Laino
yes! we are not able to measure both of them, with arbitrary accuracy
anonymous
  • anonymous
Which of the following is correct when the intensity of the light source is increased? The number of photons emitted by the light source in unit time increases. The total energy of the photons emitted per unit time decreases. Photons are emitted with more energy. Photons are emitted with more speed.
anonymous
  • anonymous
@Michele_Laino
Michele_Laino
  • Michele_Laino
it is simple, since photons are emitted with more energy. The photon speed is the light speed which can not increase since the light speed is the highest speed in our Universe
anonymous
  • anonymous
The number of photons emitted by the light source in unit time increases. is it this one
Michele_Laino
  • Michele_Laino
no, since the number of emitted photons depends on the frequency of the incident light
Michele_Laino
  • Michele_Laino
it is the third option

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