Answer-
According to the question, focal length of concave lens (f) is 2 m
Power of lens (P) = 1/f
Power = 1/ (-2)
Therefore, Power = -0.5D
Answer-
According to the question, focal length of concave lens (f) is 2 m
Power of lens (P) = 1/f
Power = 1/ (-2)
Therefore, Power = -0.5D