Question

If object is at Centre of curvature of a convex lens and u= -20cm ,v=20cm Height of object=5cm then height of image?

Answer 1

Answer:

-5 is height of image

Explanation:

V/U = H of image/ H of Object

Answer 2

★ QUESTION :

If object is at Centre of curvature of a convex lens and u= -20cm ; v=20cm Height of object=5cm then height of image ?

GIVEN :

• Value of U = -20 cm
• Value of V = 20 cm
• Height of the Obj. = 5 cm

TO FIND :

• If the all information is given , then , what the height of the image will be = ?

STEP - BY- STEP EXPLAINATION :

→ ᴠ/ᴜ = ʜᴇɪɢʜᴛ ᴏғ ᴛʜᴇ ɪᴍᴀɢᴇ / ʜᴇɪɢʜᴛ ᴏғ ᴛʜᴇ ᴏʙᴊᴇᴄᴛ

$= > \frac{v}{u} = \frac{height \: of \: the \: image \: }{Height \: of \: the \: obj.}$

$= > \frac{20cm}{ - 20cm} = \frac{5 \:cm}{1(x)}$

$= > \frac{ - 5 \times 1}{20} = \frac{ - 5}{20} = - 5 \: cm$

Therefore, The Height of the image is -5 cm.