HARD
11th CBSE
IMPORTANT
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In photoelectric effect, the kinetic energy of the photoelectrons increases linearly with the

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Important Questions on Structure of Atom

MEDIUM
11th CBSE
IMPORTANT
The series of lines present in the visible region of the hydrogen spectrum is
HARD
11th CBSE
IMPORTANT
For which of the following species, Bohr’s theory is not applicable?
HARD
11th CBSE
IMPORTANT
In hydrogen atom, energy of the first excited state is -3.4 eV. Then find out the K.E. of the same orbit of H-atom
MEDIUM
11th CBSE
IMPORTANT
Which of the following transitions will have minimum wavelength?
MEDIUM
11th CBSE
IMPORTANT
Planck’s constant has the units of
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11th CBSE
IMPORTANT
According to Bohr’s theory, the angular momentum of an electron in 5th orbit is
HARD
11th CBSE
IMPORTANT
The radius of the first Bohr orbit of hydrogen atom is 0.59 . The radius of the third orbit of He+ will be
HARD
11th CBSE
IMPORTANT
The line spectrum of He+ ion will resemble that of