Question

F = -25 u = -50m find v and m

Answer 1

Answer:

1/v + 1/u = 1/f

1/v + 1/-50 = 1/-25

1/v - 1/50 = 1/-25

1/v = -1/25 + 1/50

1/v = -2+1/50

1/v = -1/50

v = -50

m = H2/H1

= -50/-50

= 1