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An atom has a mass of 0.02kg and uncerta...

An atom has a mass of `0.02kg` and uncertainty in its velocity is `9.218xx10^(-0)m//s` then uncertainly in position is `(h=6.626xx10^(-34)Js)`

A

`2.86xx10^(-28)m`

B

`2.86xx10^(-32)m`

C

`1.5xx10^(27)m`

D

`3.9xx10^(10)m`

Text Solution

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The correct Answer is:
A
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Knowledge Check

  • Uncertainty in position of a 0.25 kg particle is 10^(-5) , uncertainty of velocity is (h=6.6xx10^(-34) Js)

    A
    `1.2xx10^(34)` m/sec
    B
    `2.1xx10^(-29)` m/sec
    C
    `1.6xx10^(-20)` m/sec
    D
    `1.7xx10^(-9)` m/sec

  • The uncertainty in momentum of an electron is 1 xx 10^-5 kg m//s . The uncertainty in its position will be (h = 6.62 xx 10^-34 kg m^2//s) .

    A
    `1.05 xx 10^-28 m`
    B
    `1.05 xx 10^-26 m`
    C
    `5.27 xx 10^-30 m`
    D
    `5.25 xx 10^-28 m`

  • The mass of the electrons 9.8 xx 10^(-28) gram and uncertainty in the velocity equal to 2 xx 10^(-3) cm//sec . The uncertainty in the position of an electron is (h = 6.62 xx 10^(-27) ergsec)

    A
    `2.9 xx 10^(+2)cm`
    B
    `2.9 xx 10^(-2)cm`
    C
    `2.9 xx 10^(-12)cm^(-1)`
    D
    `2.9 xx 10^(+12)cm^(-1)`

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    The uncertainity in the momentum of an electron is 1.0xx10^(-5)"kg m s"^(-1) . The uncertainity in its position will be: (h=6.626xx10^(-34)Js)

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