Two particles A and B are in motion . if the wavelength associated with particle A is $5\times10^{-8}$m.Calculate the wavelength associated with particle B if its momentum is half of A.

Question

$(a)\;1500A^{\large\circ}\qquad(b)\;1200A^{\large\circ}\qquad(c)\;1000A^{\large\circ}\qquad(d)\;1100A^{\large\circ}$