In Bohr atom an electron is in the 
state -
A
Number of ways in which the atom can de-excite to ground state is 
B
Possible number of different photons that can be emitted is 
C
Minimum number of atoms required to obtain all possible number of photons is 
D
Possible number of different photons that can be emitted is 
Text Solution
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(a, c, d)
Different possible number of photons 
No. of ways of de-excitation is 
Let 
one way of de-excitation
photon
Let 
= two ways of de-excitation
photons of different types can possibly be emitted.
Let 
four ways of de-excitation.
photons of different types can possibly be emitted.
when 
To obtain one photon one atom is required
when 
Three different possible photons; minimum two atoms are required
when 
Six different possible photons; minimum four atoms are required
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