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The mass of the electrons 9.8 xx 10^(-28...

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)`

Text Solution

Verified by Experts

The correct Answer is:
A
`Delta x. m . Delta v= (h)/(4pi)`
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Knowledge Check

  • 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
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    `5.27 xx 10^-30 m`
    D
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    A
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    B
    `6 xx 10^(-28)`
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    `1.008 gm`
    D
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  • 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
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