Answer
No.
Work Step by Step
No.
The more general lens maker's equation is $\frac{1}{f}=(\frac{n}{n_m}-1)(\frac{1}{R_{1}}+\frac{1}{R_{2}})$, where $n_{m}$ is the index of refraction of the surrounding material. If $n_{m}>n$, f is negative, means that the lens is diverging.
