S(1) : Bohr model is applicable for Be^(...

`S_(1)` : Bohr model is applicable for `Be^(2+)` ion .
`S_(2)` : Total energy coming out of any light source is integral multiple of energy of one photon.
`S_(3)` : Number of waves present in unit length if wave number .
`S_(4)` : e/m ratio in cathode ray experiment is independent of the nature of the gas .
Select the correct set of True-False for above statement.

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