OnlineCBT
Chemistry · Structure of atom
हिन्दीCalculate the de Broglie wavelength of an electron moving with a velocity of \( 1.0 \times 10^7 \text{ m s}^{-1} \) (mass of electron \( m_e = 9.1 \times 10^{-31} \text{ kg} \), \( h = 6.626 \times 10^{-34} \text{ J s} \)).
Correct answer · Option 2
\( 7.28 \times 10^{-11} \text{ m} \)
Explanation
Using de Broglie equation \( \lambda = \frac{h}{mv} = \frac{6.626 \times 10^{-34}}{9.1 \times 10^{-31} \times 10^7} = 7.28 \times 10^{-11} \text{ m} \).
