formula is used to find the focal length of the mirror is a)f=uv/u+v b)f=uv/u-v c)f=v-u/uv d) f=uv/u+v
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a) f=uv/u+v
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The formula used to calculate the focal length of a mirror is .
Explanation:
- A mirror's focal length is a gauge of its power.
- The focal length of the mirror is defined as the distance from the pole to the focus.
- When incident light rays are parallel to the primary axis, the focus is the point through which the reflected light rays pass (or appear to pass).
- The mirror formula is given as-
where, is the focal length, is the separation between an object and the mirror, and is the separation between an image and the mirror..
Hence, formula used for calculating the focal length of a mirror is .
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