Question

The lens has power +2.OD. This means the lens is
(convex /concave)​

Answer 1

Answer:

Convex lens

Explanation:

This means when the value of power is written for a convex lens it is given a positive sign.

Example :- If the power of a convex lens is 2.O.D, it is written as + 2.O.D.

I hope this will be help you.

Answer 2

$\huge\fbox\colorbox{lime}{╆ AɴSᴡᴇʀ╅}$

$\color{navy}{answer ⇢Convex, 50cm}$

$\pmb{{\underline{\bigstar{more \: about:-}}}}$

sɪɴᴄᴇ ᴛʜᴇ ᴘᴏᴡᴇʀ ɪs ᴘᴏsɪᴛɪᴠᴇ , ɪᴛ ɪs ᴀ ᴄᴏᴠᴇx ʟᴇɴs.

ғ = 1/ᴘ = 1/2=0.5ᴍ =50 ᴄᴍ