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The wavelength of a ball of mass 1kg moving with a velocity of 10ms^{-1} ?

  • Option 1)

    6.626\times 10^{-34} m

  • Option 2)

    6.626\times 10^{-35} m

  • Option 3)

    6.626\times 10^{-30} m

  • Option 4)

    6.626\times 10^{-33} m

 

Answers (1)

best_answer

As learnt in

De-broglie wavelength -

\lambda = \frac{h}{mv}= \frac{h}{p}

- wherein

where m is the mass of the particle

v its velocity 

p its momentum

 

 De Broglie's wavelength is given by:

\lambda = \frac{h}{p} = \frac{h}{mv}

               = \frac{6.626 \times 10^{-34}}{1 \times 10}

               = 6.626 \times 10^{-35}\ m


Option 1)

6.626\times 10^{-34} m

This option is incorrect

Option 2)

6.626\times 10^{-35} m

This option is correct

Option 3)

6.626\times 10^{-30} m

This option is incorrect

Option 4)

6.626\times 10^{-33} m

This option is incorrect

Posted by

divya.saini

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