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An object is placed at a distance of 10 ...

An object is placed at a distance of 10 cm from a convex lens of focal length 12 cm. Find the position and nature of the image.

Text Solution

Verified by Experts

The correct Answer is:
Given : Objective distance (u)=-10 cm
Focal length (f)=12 cm
To find: Image Position (V)=?
Nature of image = ?
Formula: `(1)/(v)-(1)/(u)=1/f`
`1/v -1/u = 1/f`
`therefore 1/v=1/f+1/u`
`therefore 1/v= 1/12 +1/(-10)`
`therefore 1/v = (10-12)/(12xx10)`
`therefore 1/v= (-2)/(12xx10)`
`therefore 1/v = (1-)/(60)`
`therefore v=- 60` cm
The image is formed at a distance of 60 cm on the same side of the lens, it is virtual and erect image.
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