Modern Physics PYQ
JEE Main Physics — Modern Physics previous year questions with solutions.
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Modern Physics at a glance
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10 across 6 yearsDifficulty mix
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- medium5 · 50%
- hard2 · 20%
All Modern Physics Questions (10)
The work function of a metal is 4.2 eV. The threshold wavelength for photoelectric emission is approximately:
The work function of a metal is 4.2 eV. What is the threshold wavelength for photoelectric emission? (hc = 1240 eV·nm)
The de Broglie wavelength of a particle with mass m and velocity v is:
The work function of a metal is 4.2 eV. The threshold wavelength is (hc = 1240 eV·nm):
In Bohrs model the ratio of the kinetic energy to the total energy of the electron in nth orbit is:
In hydrogen atom, the ratio of radii of first and second orbit is:
The de Broglie wavelength of a particle with momentum p is
The work function of a metal is 4.2 eV. The maximum kinetic energy of photoelectrons when light of wavelength 200 nm falls on it is:
The binding energy per nucleon is maximum for:
The de Broglie wavelength of an electron accelerated through a potential difference of 100 V is approximately: