Practice question

Given: A convex mirror has a radius of curvature of 50 cm . An object is placed 25 cm from it. What is the image distance? Formula: Focal length: f = R/2 = 50/2 = 25 cm (positive for convex). Substitution & Calculation: Object distance: u = -25 cm . Mirror equation: 1/v + 1/u = 1/f . 1/v + 1/-25 = 1/25 Rightarrow 1/v = 1/25 + 1/25 = 2/25 . v = 25/2 = 12.5 cm (virtual image). Final Result: The computed value matches expected outcome and confirms correct choice as per latest NCERT 2026-27.