Home
Class 12
CHEMISTRY
In an atom, an electron is moving with a...

In an atom, an electron is moving with a speed of 6200 m/s which the position of an electron can be locates is `(h=6.6xx10^(-34)kgm^(2)s^(-1)`, mass of electron `e_(m)=9.1xx10^(-31)kg)`

A

`1.52xx10^(-4)m`

B

`5.10xx10^(-3)m`

C

`1.92xx10^(-3)m`

D

`3.84xx10^(-3)m`

Text Solution

Verified by Experts

The correct Answer is:
C

`Deltav=0005/100xx600=0.03`
`Delta x xx mDeltav=h/(4pi)`
`Deltax=h/(4pi mDeltav)=(6.6xx10^(-34))/(4xx3.14xx9.1xx10^(-31)xx6.03)`
`=1.92xx10^(-3)m`
Promotional Banner

Topper's Solved these Questions

  • STRUCTURE OF ATOM

    MODERN PUBLICATION|Exercise RECENT EXAMINATION QUESTIONS|11 Videos
  • STRUCTURE OF ATOM

    MODERN PUBLICATION|Exercise MULTIPLE CHOICE QUESTIONS (LEVEL II)|90 Videos
  • STATES OF MATTER

    MODERN PUBLICATION|Exercise RECENT EXAMINATION QUESTIONS|12 Videos
  • SURFACE CHEMISTRY

    MODERN PUBLICATION|Exercise RECENT EXAMINATION QUESTIONS|15 Videos

Similar Questions

Explore conceptually related problems

The de Broglie wavelength of an electron is 66 nm. The velocity of the electron is (h=6.6xx10^(-34)kgm^(2)s^(-1)m=9.0xx10^(-31)kg)

Calculate the uncertainty in the position of an electron if the uncertainty in its velocity is 5.7 xx 10^5 m//sec (h = 6.626 xx 10^(-34) kg m^2 s^(-1) , mass of the electron = 9.1 xx 10^(−31) kg ).

The deBroglie wavelength of an electron travelling at 1% of the speed of light is( h=6.6xx10^(-4) Js, mass of electron =9.0xx10^(-31) kg

Light of frequency 8.41xx10^(14)Hz is incident on a metal surface. Electrons with their maximum speed of 7.5xx10^(5)ms^(-1) are ejected from the surface. Calculate the threshold frequency for photoemission of electrons. Also find the work function of the metal in electron volt (eV) . Given Plank's constant h=6.625xx10^(-34)Js and mass of the electron 9.1xx10^(-31)kg .

Calculate the wavelength of an electron moving with a velocity of 2.5xx10^(-7) ms^(-1)h=6.626xx10^(-34)Js: mass of an electron= 9.11xx10^(-31) kg.