Why is a convex mirror used to look under a vehicle during a security check?

A convex mirror is used to look under a vehicle during a security check because it provides a wider field of view compared to flat or concave mirrors. This allows security personnel to see a larger area beneath the vehicle, helping to identify any hidden objects or threats. Additionally, convex mirrors create a virtual image that appears smaller and farther away, making it easier to spot anomalies without needing to get too close. Their design also minimizes blind spots, enhancing overall safety during inspections.