Quantrex Quantrex AcademyJEE · NEET · NDA PYQs with solutions Open app
MHT CET202014 Oct 2020Morning ShiftPhysicsDual Nature of MatterActual

An electron and photon are accelerated through the same potential difference. The ratio of the de-Broglie wavelength _ p to _ e is [ m _ e = . mass of electron, m _ p = mass of proton ]

Options

  1. A( m_ p m_ e )^ 1 2
  2. B( m_ e m_ p )^ 1 2
  3. C( m_ e m_ p )
  4. D( m p m )

Correct answer

B. ( m_ e m_ p )^ 1 2

Step-by-step solution

Both will have same kinetic energy k . Momentum of electron P_ e = 2 ~m _ e k Momentum of proton P_ p = 2 m_ p k array l _ p = h p_ p , _ e = h p_ e _ p _ e = P_ e P_ p = m_ e m_ p = ( m_ e m_ p )^ 1 2 array

Practice Dual Nature of Matter on Quantrex Academy →

More from Dual Nature of Matter

The basic principle used behind the working of electron microscope is: 2026The variation of the stopping potential ( V₀ ) with the frequency of incident radiation(n) is as given below. [ n₀ - threshold frequency. h- Planck's constant e- electronic charge] 2026When metal of work function 1.4eV is exposed to a radiation, the maximum kinetic energy of the electron emitted is 0.4eV. The stopping potential required is: 2026A monochromatic beam of photons of intensity to 1.5 Wm⁻² and energy 11.2 eV is incident on a material of work function 4.8 eV. What is the maximum speed of photoelectrons emitted d 2026What is the ratio of de Broglie wavelength of an electron to that of proton if the velocity of proton is 1 6 the velocity of electron? 2026Consider normal incidence of a monochromatic beam of photons of power P on a flat surface. Of the incident beam, 10% gets absorbed, 10% gets transmitted, and the rest is reflected 2026An experimental study of the photoelectric effect involves a metal of work function ₀ . What is the smallest wavelength of the incident photon to photoemit an electron of mass m wh 2026Work function of the metal is 2026 Full Dual Nature of Matter list All MHT CET PYQs