if radius of curvature of a concave mirror is 20 cm what is its focal length
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Answered by
1
Answer:
f = R/2 = 20/2 = 10cm
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Answered by
3
Answer:
ғ = ʀ/2
= 20/2
= 10 ᴄᴍ
ᴛʜᴇʀᴇғᴏʀᴇ, ᴛʜᴇ ғᴏᴄᴀʟ ʟᴇɴɢᴛʜ ᴏғ ᴛʜᴇ sᴘʜᴇʀɪᴄᴀʟ ᴍɪʀʀᴏʀ ɪs 10 ᴄᴍ.
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