JEE Main 2026 (4 Apr, Shift 2) Physics Q44: Matter Waves

Question

The de Broglie wavelength associated with an electron accelerated through a potential difference V is

\lambda_e

and the de Broglie wavelength associated with a proton accelerated through the same potential difference is

\lambda_p

. If their corresponding masses are

m_e

and

m_p

, respectively, then the ratio of their de Broglie wavelengths

\left(\frac{\lambda_e}{\lambda_p}\right)

is ________.

Official answer

Option 1

NTA final key.

Accepted Answer

Option 1: $\sqrt{\frac{m_p}{m_e}}$

Answer

$\sqrt{\frac{m_p}{m_e}}$

Answer

$\sqrt{\frac{m_e}{m_p}}$

Answer

$\frac{m_p}{m_e}$

Answer

$\left(\frac{m_p}{m_e}\right)^2$

JEE Main 4 April 2026, Shift 2, Physics Q44