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The uncertainty in the position of an el...

The uncertainty in the position of an electron (mass `=9.1xx10^(-28)g`) moving with a velocity of `3.0xx10^(4) cms^(-1)` accurate up to 0.011% will be

A

1.92 cm

B

7.68 cm

C

0.175 cm

D

3.84 cm

Text Solution

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The correct Answer is:
C
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FIITJEE-ATOMIC STRUCTURE-ASSIGNMENT PROBLEMS (OBJECTIVE) LEVEL-I
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  2. Three metals A B and C have work functions as 15.5eV, 24eV and 30.5 eV...

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  3. The uncertainty in the position of an electron (mass =9.1xx10^(-28)g) ...

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  4. Which of the following graph is correct for 2s orbital?

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  5. The energy required to melt 1 g ice is 33J. The number of quanta of ra...

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  6. If the wavelength of the first line of the Balmer series of hydrogen ...

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  7. The energy of an electron in the first Bohr orbit for He^(+) ion is -5...

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  8. The maximum number of electrons in a sub shell having the same values ...

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  9. The first four ionization energies of an element are 191, 578, 872, an...

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  10. An electron with velocity v is found to have a certain value of de Bro...

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  11. The wavelength associated with a golf ball weighing 200 g and moving a...

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  12. Given that in H-atom the transitioin energy for n=1 to n=2 is 10.2eV,...

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  13. What is the wavelength of the radiation emitted producing a line in th...

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  14. For silver metal, the threshold frequency v(0) is 1.13x10^(17)Hz. What...

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  15. The energy of the electron in the hydrogen atom is given by the expres...

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  16. The nucleus of an atom can be asssumed to be spherical. The radius of ...

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  17. In Bohr's model of the hydrogen atom the ratio between the period of r...

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  18. An electron in an isolataed atom, may be described by four quantum num...

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  19. Number of nodal planes for f-orbital are

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  20. The wavelength of a vertain line in Balmer series is observed to be 43...

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