Question

an object is placed at a distance 20cm from a convex lens of focal length 10cm find the image distance and nature of the image ​

Answer 1

These types of problems can all be solved using the lens (or mirror) equation.

1/20 +1/q= 1/10

q=20 cm

The image is formed behind the lens at 2f or the center of curvature.

It is real, inverted, and the same size as the object.

Hope it helps you.

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Answer 2

hello buddy❤️ here is ur answer

if the object is placed on the left side of the lens,

then f=10cm ;u=-20cm

1/f =1/v - 1/u

1/v= 1/f + 1/u

1/v=1/10 + 1/(-20)

1/v= 1/10 - 1/20 =1/20

distance of the image v=20 cm

enlarged and inverted image at a distance of 20cm on the right side of the lens

m= v/u =20/-20 = -1

(-ve sign indicates the inverted image)

[nature of the image]

hope it helps you ❤️✨

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