The reduced mass of hydrogen atom is (Here m - mass of electron ; M - mass of proton)

\(\dfrac{M}{\left(1+\dfrac{m}{M}\right)}\)

\(\dfrac{m}{\left(1+\dfrac{m}{M}\right)}\)

\(m\left(1+\dfrac{m}{M}\right)\)

\(\dfrac{m}{\left(1-\dfrac{m}{M}\right)}\)

The reduced mass of hydrogen atom is (Here m - mass of electron ; M -

1.	The reduced mass of hydrogen atom is (Here m - mass of electron ; M - mass of proton)
A.	\(\dfrac{m}{\left(1+\dfrac{m}{M}\right)}\)
B.	\(\dfrac{M}{\left(1+\dfrac{m}{M}\right)}\)
C.	\(m\left(1+\dfrac{m}{M}\right)\)
D.	\(\dfrac{m}{\left(1-\dfrac{m}{M}\right)}\)
Answer» B. \(\dfrac{M}{\left(1+\dfrac{m}{M}\right)}\)