Question

a point object is kept 30cm away from a thin convex lens of focal length 20 cm and a convex mirror of radius of curvature 30cm is also kept behind the lens at a distance of 30cm from lens.the distance b/w 1st image by convex lens and final image is​

Answer 1

30 ᴄᴍ ɪꜱ ʙᴇꜱᴛ ᴋɴᴏᴡɴ ꜰᴏʀ ᴅᴇᴄᴏʀᴀᴛɪɴɢ ʙʟᴀᴄᴋ ᴛʜᴇ ᴍᴇᴀɴɪɴɢ ꜱᴏ ʟᴇɴɢᴛʜ 20

0.0