ᴀɴꜱᴡᴇʀ ᴛʜᴇ Qᴜᴇꜱᴛɪᴏɴ ɢɪᴠᴇɴ ɪɴ ᴛʜᴇ ᴀᴛᴛᴀᴄʜᴍᴇɴᴛ
only part (b)
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Answer:
(b) Focal length, f = -5 m
P= 1/ f (m)
P = 1 / -5 = - 0.2D
Hence, the power is - 0.2D.
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an electronic machine that can store, find and arrange information, calculate amounts and control other machines
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