Number of spectral lines from a state n to ground state is =2n(n−1)=6.
JEE Main 2012 — Physics Modern Physics
Hydrogen atom is excited from ground state to another state with principal quantum number equal to 4. Then the number of spectral lines in the emission spectra will be
Held on 30 Apr 2012 · Verified 6 Jul 2026.
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Two $4$ bits binary numbers, $A = 1101$ and $B = 1010$ are given in the inputs of a logic circuit shown in figure below. The output $(Y)$ will be: 
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The output $Y$ for the given inputs $A$ and $B$ to the circuit is: 
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