Question

Qᴜᴇꜱᴛɪᴏɴ :
ᴀɴ ᴏʙᴊᴇᴄᴛ ᴏꜰ ꜱɪᴢᴇ 7.0 ɪꜱ ᴘʟᴀᴄᴇᴅ ᴀᴛ 27 ᴄᴍ ɪɴ ꜰʀᴏɴᴛ ᴏꜰ ᴀ ᴄᴏɴᴄᴀᴠᴇ ᴍɪʀʀɪᴏʀ ᴏꜰ ꜰᴏᴄᴀʟ ʟᴇɴɢᴛʜ 18 ᴄᴍ .ᴀᴛ ᴡʜᴀᴛ ᴅɪꜱᴛᴀɴᴄᴇ ꜰʀᴏᴍ ᴛʜᴇ ᴍɪʀʀɪᴏʀ ꜱʜᴏᴜʟᴅ ᴀ ꜱᴄʀᴇᴇɴ ʙᴇ ᴘʟᴀᴄᴇᴅ .ꜰɪɴᴅ ᴛʜᴇ ꜱɪᴢᴇ ᴀɴᴅ ᴛʜᴇ ɴᴀᴛᴜʀᴇ ᴏꜰ ᴛʜᴇ ɪᴍᴀɢᴇ .

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Answer 1

${\tt { {\underline{\underline{\huge{ ǫᴜEsTɪᴏɴ:}}}}}}$

ᴀɴ ᴏʙᴊᴇᴄᴛ ᴏꜰ ꜱɪᴢᴇ 7.0 ɪꜱ ᴘʟᴀᴄᴇᴅ ᴀᴛ 27 ᴄᴍ ɪɴ ꜰʀᴏɴᴛ ᴏꜰ ᴀ ᴄᴏɴᴄᴀᴠᴇ ᴍɪʀʀɪᴏʀ ᴏꜰ ꜰᴏᴄᴀʟ ʟᴇɴɢᴛʜ 18 ᴄᴍ .ᴀᴛ ᴡʜᴀᴛ ᴅɪꜱᴛᴀɴᴄᴇ ꜰʀᴏᴍ ᴛʜᴇ ᴍɪʀʀɪᴏʀ ꜱʜᴏᴜʟᴅ ᴀ ꜱᴄʀᴇᴇɴ ʙᴇ ᴘʟᴀᴄᴇᴅ .ꜰɪɴᴅ ᴛʜᴇ ꜱɪᴢᴇ ᴀɴᴅ ᴛʜᴇ ɴᴀᴛᴜʀᴇ ᴏꜰ ᴛʜᴇ ɪᴍᴀɢᴇ .

$\: \: \: \:$

${\tt { {\underline{\underline{\huge{ AɴsWᴇʀ:}}}}}}$

u = – 27 cm

f = – 18 cm

h0 = 7.0 cm

1/v = 1/f- 1/u 1/v

= -1/18 + 1/27 = -1/54 V

= – 54 cm Screen must be placed at a distance of 54 cm from the mirror in front of it.

hi/h0= v/u

hi/h0= v/u hi/7 = +54/-27

hi= -2 x 7 = -14 cm.

$\: \: \:$

Thus, the image is of 14 cm length and is inverted image

Answer 2

Explanation:

Answer will be -14 Cm

I hope it helps you ✌️