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Q.

The mass of a particle is 10-10 gm and its radius is 2 x 10-4 cm. If its velocity is 10-6 cm sec-1 with 0.0001 % uncertainty in measurement, the uncertainty in its position is

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a

5.2×10−6m

b

5.2×10−9m

c

5.2×10−8m

d

5.2×10−7m

answer is A.

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Detailed Solution

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uncertainity in velocity = 10-14m/sec

mass = 10-13 Kg

∆p=0.52×10-3410-13×10-14=5.2×10-8m

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