In negative beta decay :-

During a negative beta decay:

During negative beta -decay ______

During a negative beta -decay

During a negative beta decay,

During a negative beta decay,

During a negative beta decay,

(P). In a negative beta^(-) decay reaction z^(X^(A))toz+1^(Y^(A))+beta^(-1)+overline(upsilon) (1). Total energy is conserved (Q). When a heavy object is projected from the surface of earth . (2). Total linear momentum of the system is conseved. (R). When an electron jumps from higher energy level to ground state. (3). Total angular momentum is conserved (S). When a rocket moves due to thrust of ejected gases . (4). total mass is conserved