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A proton and an alpha particle are proje...

A proton and an alpha particle are projected in a magnetic field which exists in the width of region d. Compare the angles of deviation suffered by the proton and the alpha particle if before entering the magnetic field both the particles.
a. have the same momentum,
b. have the same kinetic energy, and
c. are accelerated through the same potential difference. Take `m_alpha = 4 m_p, q_alpha = 2 q_p.`

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