Q.

The measurement of the electron position is associated with an uncertainty in momentum, which is equal to 1×1018gcms-1. The uncertainity in electron velocity is, (Mass of an electron is 9×1028 g )

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a

1×1011cms-1

b

1×109cms-1

c

1×105cms-1

d

1×106cms-1

answer is B.

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Detailed Solution

mv = 1×10-18 g cm s-1

v = 1×10-18 g cm s-19×10-28 g =0.1×1010cm s-1

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