Quantrex AcademyJEE · NEET · NDA PYQs with solutions Open app

MHT CET 202625 AprilMorning Shift

Exam: MHT CET
Year: 2026
Date: 25 April
Shift: Morning Shift
Subject: Physics
Chapter: Dual Nature of Matter

MHT CET 2026 · 25 April · Morning Shift · Physics · Dual Nature of Matter

An electron and positron are accelerated from rest to the same...

An electron and positron are accelerated from rest to the same kinetic energy. The ratio of their de Broglie wavelengths is

Options

A $1:2$
B $2:1$
C $1:4$
D $1:1$

Correct answer

D. $1:1$

Step-by-step solution

The de Broglie wavelength is given by

\lambda = \dfrac{h}{p} = \dfrac{h}{\sqrt{2mK}}

Since both the electron and positron have the same mass (m

) and are accelerated to the same kinetic energy (K

), their de Broglie wavelengths will be equal.

Therefore, the ratio of their de Broglie wavelengths is

1:1

.

Answer:

1:1

Practice Dual Nature of Matter on Quantrex Academy →

More from Dual Nature of Matter

An electron of mass m and charge e initially at rest gets accelerated by a constant… MHT CET Medical 2026 The wavelength λ_e of an electron and λ_P of a photon of same energy E are related as MHT CET Medical 2026 A light of wavelength λ(λ < λ_0) falls on a metal surface. The momentum of the fastest… MHT CET Medical 2026 The de Broglie wavelength of an electron with kinetic energy K_1 is λ_1 . If the kinetic… MHT CET Medical 2026 A student plots two different graphs using the same photoelectric experiment data. 1.… MHT CET Medical 2026 In a photoelectric cell, for the incident radiation of wavelength λ , the fastest… MHT CET Medical 2026 A particle is dropped from a height ' y '. The de-Broglie wavelength of the particle as a… MHT CET Medical 2026 Light of frequency 4ν_0 is incident on the metal of threshold frequency ν_0 . The maximum… MHT CET Medical 2026 Full Dual Nature of Matter list All MHT CET Medical PYQs