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Figure shows four situations in which an electron is moving in electric/magnetic field. In which case the de Broglie wavelength of electron is increasing?

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Important Questions on Dual Nature of Radiation and Matter

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For an electron microscope, which of the following is false?
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Variation of momentum of particle p with associated de-Broglie wavelength λ is shown correctly by
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A photon and a proton have equal energy E. Ratio of wavelengths λphotonλproton is proportional to
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For a proton accelerated through potential difference of one volt, kinetic energy gained in eV is
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If frequency of light falling on a photosensitive material doubles
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For an alpha particle, accelerated through a potential difference V, wavelength (in Å) of the associated matter wave is
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For a proton accelerated through V volts, de Broglie wavelength is given as λ=
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X-rays of wavelength 22 pm are scattered from a carbon target at an angle of 85° to the incident beam. The Compton shift for X-rays is cos85°=0.088