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Ratio of radii of a deuteron and a proton with equal kinetic energy in a field

The same question, asked 2 times: 27 Jun 2022, 9 Apr 2024. Every wording below, oldest first.

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  1. Question 1

    27 Jun 2022

    118
    A deuteron and a proton moving with equal kinetic energy enter into to a uniform magnetic field at right angle to the field. If rdr_{d} and rpr_{p} are the radii of their circular paths respectively, then the ratio rdrp\frac{r_{d}}{r_{p}} will be x:1\sqrt{x}:1 where xx is

  2. Question 2

    9 Apr 2024

    104
    A proton and a deutron ( q=+e,m=2.0uq = + e,m= 2.0u ) having same kinetic energies enter a region of uniform magnetic field B→\overrightarrow{B}, moving perpendicular to B→\overrightarrow{B}. The ratio of the radius rdr_{d} of deutron path to the radius rpr_{p} of the proton path is:

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