Question

*ᴀɴꜱᴡᴇʀ ᴛʜᴇ Qᴜᴇꜱᴛɪᴏɴ ɢɪᴠᴇɴ ɪɴ ᴛʜᴇ ᴀᴛᴛᴀᴄʜᴍᴇɴᴛ

only part (b)​

Answer 1

Answer:

an electronic machine that can store, find and arrange information, calculate amounts and control other machines

Answer 2

Answer:

(b) Focal length, f = -5 m

P= 1/ f (m)

P = 1 / -5 = - 0.2D

Hence, the power is - 0.2D.