Q.
How much kinetic energy will be gained by an a-particle in going from a point at 70 V to another point at 50 V ?
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a
40 eV
b
40 keV
c
40 MeV
d
0 eV
answer is A.
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Detailed Solution
KE=qV1-V2=2×1.6×10-19×(70-50)=40eV
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