Question

plz help me plzzzzzzzz​

Answer 1

power= 1/ focal length

-3 = 1/f

f= 1/3

= 0.333

hope it may help you

please mark me as a brainliest

Answer 2

Answer:Hi

It is a concave lens as it’s focal length is negative if it were positive or wold have been a convex mirror

And coming to the focal length you should mention D m^-1 so the focal length is 3 Dm^-1 which is equivalent to

P=1/focal length and focal length is inversely proportionate to the power

I gave u all the understanding try to find the focal length on your own

hope this helps and gives you a learning

Explanation:

Hint 1/3