Question

An object of height 3 cm is placed at a distance of 10 cm in front of a concave mirror/convex lens of focal length 20 cm.Find the position,size and nature of the image.​​

Answer 1

Answer:

The image is inverted and magnified 10 times  

the image is real

the image is formed on 2f2

Explanation:

By using formula

*1/v =1/-u + 1/f

we get v as 20

then by magnification formula

*m=20/-2 =-10

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