Solution:
From the law of conservation of momentum
The ratio of De-Broglie wavelength
A bomb projected from ground at an angle with horizontal explodes into two fragments of equal mass at top most point of its trajectory. If one of the fragment returns to point of projection then ratio of de-Broglie wavelength of second fragment just after explosion to bomb just before explosion is
From the law of conservation of momentum
The ratio of De-Broglie wavelength