Question

plz explain this question its ans is (1)​

Answer 1

Rest mass energy of electron=>

E = mc^2

E =9.1×10^-31 × ( 3×10^8 )^2

E = 8.19 × 10^-14 J.

Now ,

E = pc

p = E / c

p = (8.19 × 10^-14) / (3 × 10^8)

p = 2.73 × 10^-22 kg m/s..●

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Hope it was helpful.