QUIZ 2:Photoelectric Effect(#freetestseries) - JEE MCQ

A photon, an electron and a uranium nucleus all have the same wavelength. The one with the most energy [MP PMT 1992]

 When the kinetic energy of an electron is increased, the wavelength of the associated wave will

If the de-Broglie wavelengths for a proton and for a α−particle are equal, then the ratio of their velocities will be [NCERT 1972]

A particle which has zero rest mass and non-zero energy and momentum must travel with a speed [MP PMT 1992; DPMT 2001; Kerala PMT 2004]

 Dual nature of radiation is shown combinedly by [MP PET 1991]

For the Bohr's first orbit of circumference 2πr, the de-Broglie wavelength of revolving electron will be [MP PMT 1987]

 An electron of mass m when accelerated through a potential difference V has de-Broglie wavelength λ. The de-Broglie wavelength associated with a proton of mass M accelerated through the same potential difference will be [CBSE PMT 1995; EAMCET 2001; J & K CET 2004]

 What will be the ratio of de-Broglie wavelengths of proton and α−particle of same energy [RPET 1991, 96; DCE 2002; Kerala PET 2005]

What is the de-Broglie wavelength of the α−particle accelerated through a potential difference V [RPMT 1996]

The energy that should be added to an electron, to reduce its de-Broglie wavelengths from 10^-10 m to 0.5×10​^-10m, will be [KCET (Engg./Med.) 2000]

If particles are moving with same velocity, then maximum de-Broglie wavelength will be for [CBSE PMT 2002]

 If an electron and a photon propagate in the form of waves having the same wavelength, it implies that they have the same [CBSE PMT 1995; DCE 2001; AIIMS 2003]