EASY
KCET (UG)
IMPORTANT
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Light of certain frequency and intensity incident on a photosensitive material causes photoelectric effect. If both the frequency and intensity are doubled, the photoelectric saturation current becomes
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Important Questions on Dual Nature of Matter and Radiation
MEDIUM
KCET (UG)
IMPORTANT
The work function of a metal is . Light of wavelength is incident on this metal surface. The velocity of emitted photoelectrons will be
EASY
KCET (UG)
IMPORTANT
According to Einstein's photoelectric equation, the graph between kinetic energy of photoelectrons ejected and the frequency of incident radiation is
EASY
KCET (UG)
IMPORTANT
The de-Broglie wavelength associated with electron of hydrogen atom in the ground state is
MEDIUM
KCET (UG)
IMPORTANT
An electron is moving with an initial velocity and is in a uniform magnetic field . Then its de Broglie wavelength
MEDIUM
KCET (UG)
IMPORTANT
A proton and an particle are accelerated through the same potential difference . The ratio of their respective de-Broglie's wavelengths is
EASY
KCET (UG)
IMPORTANT
The figure shows standing de Broglie waves due to the revolution of electron in a certain orbit of hydrogen atom. Then the expression for the orbit radius is (all notations have their usual meanings)
MEDIUM
KCET (UG)
IMPORTANT
An electron in an excited state of ion has angular momentum . The de Broglie wavelength of electron in this state is (where radius). The value of is
