COMEDK 2024 Shift 1 Paper

The focal length of a convex mirror is independent of the wavelength of the incident light. This is because the focal length of a mirror is determined by the curvature of the reflecting surface and not by the properties of the light used.
Therefore, even if the wavelength of the incident light is doubled, the focal length of the mirror will remain the same. As given, the original focal length of the convex mirror is 10 cm . So, if the wavelength is doubled, the focal length will still be:
10 cm
Hence, the correct option is:
Option D: 10 cm