An electron (charge =$1.6 \times {10^{ - 19}}C$) is accelerated through a potential of $ 100,000 V$. The energy acquired by the electron is
$1.6 \times {10^{ - 24}}\;J$
$1.6 \times {10^{ - 14}}\;erg$
$0.53 \times {10^{ - 17}}J$
$1.6 \times {10^{ - 14}}J$
The mass of the electron varies with
An electron initially at rest, is accelerated through a potential difference of $ 200$ volt, so that it acquires a velocity $8.4 \times {10^6}m/s.$ The value of $e/m$ of electron will be
${O^{ + + }},\;{C^ + },\;H{e^{ + + }}$ and ${H^ + }$ ions are projected on the photographic plate with same velocity in a mass spectrograph. Which one will strike farthest
Write name of universal and fundamental particle of matter.
Order of q/m ratio of proton, $\alpha $ -particle and electron is