Question

A convex mirror has a focal length of 15 cm. A 15 cm tall object is placed at a distance of 10 cm from the mirror. What is the size of the image formed?!​

Answer 1

When an object is placed at a distance of 15 cm from a concave mirror, its image is formed at 10 cm in front of the mirror. When an object is placed at a distance of 15 cm from a concave mirror, its image is formed at 10 cm in front of the mirror.

Answer 2

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$\huge\fcolorbox{black}{aqua}{Solution:-}$

✒ ᴀɴsᴡᴇʀ:-

⛄ sɪᴢᴇ ᴏғ ᴛʜᴇ ɪᴍᴀɢᴇ ғᴏʀᴍᴇᴅ = 9 ᴄᴍ.

✒ ᴇxᴘʟᴀɴᴀᴛɪᴏɴ:-

⛄ ɢɪᴠᴇɴ:-

★ ғ = 15 ᴄᴍ.

★ ᴜ = -10 ᴄᴍ.

ᴡᴇ ᴋɴᴏᴡ ᴛʜᴀᴛ,

1/ᴠ + 1/ᴜ = 1/ғ

=) 1/ᴠ = 1/ғ - 1/ᴜ

=) 1/15 - 1/-10

=) 25/15 × 10

=) ᴠ = 6 ᴄᴍ.

ɴᴏᴡ,

ᴍ = -ᴠ/ᴜ

= 6/10

= 0.6

ᴀʟsᴏ,

ʜɪ = ᴍ × ʜᴏ

=) ʜɪ= 0.6 × 15

=) ʜɪ = 9 ᴄᴍ.

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