Question

find the power of concave lens of focal length -2m

Answer 1

since power=1/f
p=1/-2
p=-0.5D

PLS MARK AS BRAINLIEST PLSSS

Answer 2

ғᴏᴄᴀʟ ʟᴇɴɢᴛʜ ɪs ɢɪᴠᴇɴ ᴛɢᴀ 2 ᴍ

ᴘᴏᴡᴇʀ ᴏғ ʟᴇɴs ᴘ = 1/ғ

ᴘ = 1 / -2 ( ᴠ sʜᴅ ᴀʟᴡᴀʏs ᴛᴀᴋᴇ ɪᴛ ɴᴇɢᴀᴛɪᴠᴇ)

ᴘ = -0.5 ᴅ