An electron and a proton are detected in a cosmic ray experiment, the first with kinetic energy 10 keV, and the second with 100 keV. The ratio of their speeds is:
(Where 
and 
are masses of electron and proton respectively)
A
B
C
D
Text Solution
Verified by ExpertsThe correct answer is:
B
: Kinetic energy of the electron,
……(i)
Kinetic energy of the proton,
……(ii)
Divide (i) by (ii), we get
Or 
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