A particle 'P' is formed due to a completely inelastic collision of particles 'x' and 'y' having de-Broglie wavelength `'lambda_(x)`' and `'lambda_(y)` respectively. If x and y were moving in opposite directions, then the de-Broglie wavelength 'P' is :

Options

A. `(lambda_(x)lambda_(y))/(lambda_(x)+lambda_(y))`
B. `(lambda_(x)lambda_(y))/(|lambda_(x)-lambda_(y)|)`
C. `lambda_(x)-lambda_(y)`
D. `lambda_(x)+lambda_(y)`

Answer

A