Question

can anyone help me with this​

Answer 1

Answer:

f = 1.5m=-150cm, u =-50cm

1/-150 = 1/-50 + 1/v

1/v = -1/150 +1/50

= (-1+3)/150

= 2/150

=1/75

v = 75cm

Answer 2

it is a concave lens

so, u nd f are negative

hope it's helpful