is negative sign applicable for object distance, focal length and image distance in the case of a concave mirror always?

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Solution

Dear Student!
For a concave mirror the focal length and the object distance is always negative. But as far as he image distance is concerned, it depends on the position of the image. If the image is virtually formed behind the mirror then the image distance will be positive and negative otherwise.

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is negative sign applicable for object distance, focal length and image distance in the case of a concave mirror always?

Dear Student!For a concave mirror the focal length and the object distance is always negative. But as far as he image distance is concerned, it depends on the position of the image. If the image is virtually formed behind the mirror then the image distance will be positive and negative otherwise.

Dear Student!
For a concave mirror the focal length and the object distance is always negative. But as far as he image distance is concerned, it depends on the position of the image. If the image is virtually formed behind the mirror then the image distance will be positive and negative otherwise.