Physics · Light and Reflection

A concave mirror and a convex mirror are cut from the same spherical glass ball, but the aperture of the concave mirror is greater than the aperture of the convex mirror. What can be said about their focal lengths?

Verified Solution4 OptionsUpdated: October 2026👁️1 View

1Focal lengths cannot be compared with the given information.
2Both have the same focal length.✓
3The focal length of the convex mirror is greater than that of the concave mirror.
4The focal length of the concave mirror is greater than that of the convex mirror.

Correct answer

Both have the same focal length.

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