Yes. Using the lens maker formula we can show it. We know that the formula is:f1​=(μ1​μ2​​−1)(R1​1​−R2​1​)Where, f is the focal length of the thin converging lens.μ2​ and μ1​ are refractive indexes of lens and air respectively.R1​ and R2​ are the radius of curvature of convex and plane surfaces respectively.Here, R2​ = ∞ because of the plane surface.Case 1When the convex surface is facing the object,we have:f1​=(μ1​μ2​​−1)(R1​1​−∞1​)Case 2: When the plane surface is facing the object, we have:f1​=(μ1​μ2​​−1)R1​1​...(i) f1​=(μ1​μ2​​−1)(∞1​−R1​1​)For Case 1, the focal length is positive and for the Case 2 the focal length is negative.Thus, the image distance is different in both cases.