de Broglie Wavelength

JEE Main Physics · Dual Nature of Matter and Radiation · 30 questions, latest first

• The de Broglie wavelength for an electron accelerated through the potential difference of V_1 volt is λ_1. When the potential…20266 April, Shift 2 · Q47
• An electron is travelling with a velocity v in free space and when it enters a medium, its velocity is reduced by 20 %. The de…20265 April, Shift 2 · Q43
• An electron of mass m is moving in an electric field E=-2 E_o i(E_o=. constant.>0), with an initial velocity V=v_o i (v_o=.…20265 April, Shift 1 · Q35
• The de Broglie wavelength associated with an electron accelerated through a potential difference V is λ_e and the de Broglie…20264 April, Shift 2 · Q44
• The ratio of de Broglie wavelength of a deutron with kinetic energy E to that of an alpha particle with kinetic energy 2 E, is n:…202628 January, Shift 1 · Q48
• The de Broglie wavelength of an oxygen molecule at 27^° C is x × 10^-12 m. The value of x is (take Planck's constant =6.63 ×…202623 January, Shift 1 · Q43
• A particle having electric charge 3 × 10^-19 C and mass 6 × 10^-27 kg is accelerated by applying an electric potential of 1.21 V.…202621 January, Shift 2 · Q50
• An electron is released from rest near an infinite non-conducting sheet of uniform charge density ' -σ '.The rate of change of…20258 April, Shift 2 · Q50
• A photoemissive substance is illuminated with a radiation of wavelength λ_i so that it releases electrons with de-Broglie…20257 April, Shift 2 · Q43
• An electron with mass ' m ' with an initial velocity (t=0) v=v_0 i(v_0>0) enters a magnetic field B=B_0 j. If the initial…20252 April, Shift 2 · Q33
• If λ and K are de Broglie wavelength and kinetic energy, respectively, of a particle with constant mass. The correct graphical…202529 January, Shift 1 · Q43
• A proton of mass ' m_p ' has same energy as that of a photon of wavelength ' λ '. If the proton is moving at non-relativistic…202528 January, Shift 1 · Q43
• An electron of mass ' m ' with an initial velocity v=v_0 i(v_0>0) enters an electric field E=-E_o k. If the initial de Broglie…202524 January, Shift 1 · Q43
• A sub-atomic particle of mass 10^-30 kg is moving with a velocity 2.21 × 10^6 m / s. Under the matter wave consideration, the…202523 January, Shift 1 · Q43
• A proton, an electron and an alpha particle have the same energies. Their de-Broglie wavelengths will be compared as:20249 April, Shift 1 · Q46
• A proton and an electron have the same de Broglie wavelength. If K_p and K_e be the kinetic energies of proton and electron…20248 April, Shift 2 · Q46
• A proton and an electron are associated with same de-Broglie wavelength. The ratio of their kinetic energies is: (Assume h=6.63 ×…20248 April, Shift 1 · Q44
• The de Broglie wavelengths of a proton and an α particle are λ and 2 λ respectively. The ratio of the velocities of proton and α…20241 February, Shift 1 · Q46
• The de-Broglie wavelength of an electron is the same as that of a photon. If velocity of electron is 25 % of the velocity of…202429 January, Shift 1 · Q46
• The de Broglie wavelength of an electron having kinetic energy E is λ. If the kinetic energy of electron becomes E/4, then its…202315 April, Shift 1 · Q45
• A proton and an α -particle are accelerated from rest by 2 V and 4 V potentials, respectively. The ratio of their de-Broglie…202312 April, Shift 1 · Q47
• The ratio of the de-Broglie wavelengths of proton and electron having same Kinetic energy: (Assume m_p=m_e × 1849 )202311 April, Shift 2 · Q45
• The de Broglie wavelength of a molecule in a gas at room temperature (300 K) is λ_1. If the temperature of the gas is increased…202310 April, Shift 1 · Q46
• Proton (P) and electron (e) will have same de-Broglie wavelength when the ratio of their momentum is (assume, m_p=1849 m_e ):20238 April, Shift 1 · Q44
• The kinetic energy of an electron, α -particle and a proton are given as 4 K, 2 K and K respectively. The de-Broglie wavelength…20236 April, Shift 1 · Q35
• A proton moving with one tenth of velocity of light has a certain de Broglie wavelength of λ. An alpha particle having certain…20231 February, Shift 1 · Q5
• An electron accelerated through a potential difference V_1 has a de-Broglie wavelength of λ. When the potential is changed to…202330 January, Shift 2 · Q17
• The ratio of de-Broglie wavelength of an α particle and a proton accelerated from rest by the same potential is 1/(√m), the value…202329 January, Shift 2 · Q17
• Electron beam used in an electron microscope, when accelerated by a voltage of 20 kV, has a de-Broglie wavelength of λ_o. If the…202325 January, Shift 1 · Q18
• An α -particle, a proton and an electron have the same kinetic energy. Which one of the following is correct in case of their…202324 January, Shift 2 · Q13