Physics · 2019
JEE Main · 9 January 2019, Shift 2 · Q20
A particle having the same charge as of electron moves in a circular path of radius 0.5 cm under the influence of a magnetic field of 0.5 T. If an…
A particle having the same charge as of electron moves in a circular path of radius $\displaystyle 0.5$ cm under the influence of a magnetic field of $\displaystyle 0.5$ T. If an electric field of $\displaystyle 100$ V/m makes it to move in a straight path, then the mass of the particle is (Given charge of electron $\displaystyle =1.6 \times 10^{-19} \mathrm{C}$ )
Official answer
(2)
$\displaystyle 2.0 \times 10^{-24} \mathrm{~kg}$
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JEE Main 2019 Physics question, with the answer from NTA’s final answer key. Where our answers come from.