Home
Class 11
CHEMISTRY
Calculate the kinetic energy of a moving...

Calculate the kinetic energy of a moving electron associated with a wavelength of 4.8 pm.

Text Solution

Verified by Experts

`v=(h)/(mlamda)=(6.626xx10^(-34)kg*m^(2)*s^(-1))/((9.11xx10^(-31)kg)xx(4.8xx10^(-12)m))`
`=1.51xx10^(8)m*s^(-1)`
`therefore`Kinetic energy
`=(1)/(2)xx(9.11xx10^(-31)kg)xx(1.51xx10^(8)m*s^(-1))^(2)`
`=1.38xx10^(-14)J`.
Doubtnut Promotions Banner Mobile Dark
|

Topper's Solved these Questions

  • STRUCTURE OF ATOM

    CHHAYA PUBLICATION|Exercise PRACTICE SET|15 Videos

  • STRUCTURE OF ATOM

    CHHAYA PUBLICATION|Exercise EXERCISE (SHORT TYPE QUESTIONS)|26 Videos

  • STATES OF MATTER : GASES AND LIQUIDS

    CHHAYA PUBLICATION|Exercise PRACTICE SET|10 Videos

Similar Questions

Explore conceptually related problems

Calculate the kinetic energy of a moving electron which has a wavelength of 4.8 pm. [mass of electron = 9.11 xx 10^(-31) kg, h = 6.626 xx 10^(-34) Kg m^2s^(-1) ].

Calculate the kinetic energy of an alpha -particle which has a de broglie wavelength 8 pm.

Knowledge Check

  • The energy (in eV) of each photon associated with the light of wavelength 5893 Å

    A
    `2.1`
    B
    `3.9`
    C
    `4.2`
    D
    `5.89`

    • Similar Questions

    Explore conceptually related problems

    Calculate the kinetic energy of a bullet of mass 50 g moving with a velocity of 200 m*s^(-1) .

    The kinetic energy of an electron is 4.55x10^(-25)J calculate the wavelength.

    If the kinetic energy of an electron increases by nine times, the wavelength of the de Broglie wave associated with it will increase by how many times?

    Calculate the kinetic energy of an electron having potential energy 1.5 ev. in SI unit.

    Calculate the frequency and kinetic energy of a photon having wavelength 450 km.

    What should be the percentage increase or decrease of kinetic energy of an electron so that its de Broglie wavelength is halved?

    (a) For what kinetic energy of a neutron will the associated de Broglie wavelength be 1.40 xx 10^(-10) m ? (b) Also find the de Broglie wavelength of a neutron, in thermal equilibrium with matter, having an average kinetic energy of (3/2) k T at 300 K.

    Home
    Profile