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  • Task 3.8
  • In the oscillatory circuit, the maximum current is 0.2 A, and the maximum voltage on the plates
  • 40 V capacitor. Find the energy of the oscillating circuit if the period of oscillation is 15.7 microseconds.
  • Task 3.18
  • What is the difference in phase of the oscillations of two points, if they are separated from each other by a distance of 3 m and
  • Lie on a straight line perpendicular to the front of the wave. The wave propagation velocity is 600 m / s, and the period
  • Vibrations of 0.02 s.
  • Task 3.28
  • Newton´s rings are formed between a flat glass and a lens with a radius of curvature of 10 m.
  • Monochromatic light falls normally. The diameter of the third light ring in reflected light is
  • 8 mm. Find the wavelength of the incident light.
  • Task 3.38
  • What difference in wavelengths of orange rays (? = 0.6 microns) can resolve the diffraction grating
  • Width of 3 cm and a period of 9 μm in the spectrum of the third order?

  • Task 3.48
  • Natural light passes through two polarizers, the angle between the main planes of which is 30 °. In
  • how many times. The intensity of the light passed through this system will change if the angle between the planes
  • Polarizers increase by half?
  • Task 3.58
  • Determine the thickness of the layer of matter that attenuates the intensity of monochromatic light by three times,
  • If the thickness of the half-attenuation layer is 2 m.
  • Task 3.68
  • Light with a wavelength of 0.5 μm normally falls on the mirror surface and produces pressure on it
  • 4 μPa. Determine the number of photons incident per second on 1 cm2 of this surface.
  • Task 3.78
  • A gamma-photon with an energy of 1.02 MeV as a result of Compton scattering by a free electron
  • Deviated from the original direction by an angle of 90 °. Determine the kinetic energy and momentum
  • The recoil electron. Before the collision, the electron rested.

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