Question: 100% NCERT covered from Particular Keyword.Explanations are 100% from NCERT | [Difficult level: Easy] From NCERT NEET Derived Question.
A proton and a deuterium nucleus having certain kinetic
energies enter in a uniform magnetic field with same
component of velocity in the direction of magnetic field.
Which of the following is correct ?
(a) Proton has greater pitch of helical motion.
(b) Deuterium nucleus has greater pitch of helical motion.
(c) Both particles have same pitch of helical motion.
(d) Which particle has greater pitch depends on the fact
that which particle has greater component of velocity
perpendicular to magnetic field.
Answer: b
Due to perpendicular component both will execute circular motion for whichT= 2 pie m/qB . Since q is same, therefore T directly proportional m. Hence deuterium nucleus will travel more distance.
