Student Login

Home›Chapters›Dual Nature of Radiation and Matter PYQs›Matter Waves: de Broglie Wavelength›Question 129

JEE Main 2018 (16 Apr, Shift 1) · Matter Waves: de Broglie Wavelength

Matter Waves: de Broglie Wavelength question from JEE Main 2018 (16 Apr, Shift 1)

Q129JEE Main 2018 · 16 APR · SHIFT 1Medium

Matter Waves: de Broglie Wavelength

The de-Broglie wavelength ( $\lambda$ B) associated with the electron orbiting in the second excited state of hydrogen atom is related to that in the ground state ( $\lambda$ G) by:

Show answer and solution

Answer: (b)

$\lambda = \dfrac{2\pi r_n}{n} \propto n$
Second excited state: $n = 3$ ; ground state: $n = 1$ .
$\lambda_B = 3\lambda_G$
So the answer is (b).

Report a mistake

More questions on Matter Waves: de Broglie Wavelength

Two electrons are moving with non-relativistic speed perpendicular to each other. If…JEE Main 2018 (15 Apr, Shift 1)
The de-Broglie wavelength of a neutron in thermal equilibrium with heavy water at a…NEET 2017
A particle A of mass m and initial velocity v collides with a particle B of mass m/2…JEE Main 2017
An electron of mass m and a photon have same energy E. The ratio of de-Broglie…NEET 2016 (Phase 1)
Which of the following figures represent the variation of particle momentum and the…NEET 2015 (AIPMT, Cancelled Paper)
de-Broglie wavelength of an electron accelerated by a voltage of 50 V is close to ( |e| =…JEE Main 2015 (10 Apr, Shift 1)
For which of the following particles will it be most difficult to experimentally verify…JEE Main 2014 (9 Apr, Shift 1)
If the kinetic energy of the particle is increased to 16 times its previous value, the…NEET 2014 (AIPMT)