Question

An object is placed at $15\text{cm}$ in front of a convex mirror with radius of curvature $30\text{cm}$. Where will the image form?

• A. Infinity
• B. $1.85\text{cm}$
• C. $-1.85\text{cm}$
• D. $3.75\text{cm}$

Answer 1

The correct option is A Infinity

$R=30\text{cm},f=–15\text{cm},u=–15\text{cm},v=?$
The object is at the principal focus. Hence, the image will be formed at infinity.