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1.32/2=16 cm
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- Find the focal length of a convex mirror whose radius of curvature is 32 cm
- Radius of curvature of a convex mirror is +ve and focal length is half of it. So, we can use the following formula to find the value of focal length
hence, the required focal length is 16 cm.
A concave mirror produces 3 times enlarged image of an object kept 10 cm in front of it. Where is the image located ?
- in the question we are provided with the magnification of an image which is the ratio of image distance and object distance. Also, we are given the object distance
- we are asked to find the image distance.
- Object Distance is always -ve.
- we can use the following formula to find the required value.
hence, the required image is formed at a distance of 30 cm behind the mirror.
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