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An electron and a proton are detected in...

An electron and a proton are detected in a cosmic ray experiment, the first with kinetic energy 10keV, and the secondwith 100 keV. Which is faster, the electron or the proton? Obtain the ratio of their speeds. (electrons mass = `9.11 xx 10^(-31))` kg, proton mass = `1/67 xx 10^(-27)kg`, 1eV=`1.60 xx 10^(-1()J`

A

13.53

B

3.53

C

3.5

D

14

Text Solution

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The correct Answer is:
A
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