Q.
Energy equal to the mass of one electron is
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a
8.2 × 10–7erg
b
9.2 × 10–8erg
c
8.2 × 10–10erg
d
4.1 × 10–8erg
answer is A.
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Detailed Solution
E = mc2E = (9.1 × 10-28g)(3 × 1010 cm/s)2E = 8.2 × 10-7 ergs.
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