The side mirror of a scooter got broken. The mechanic replaced it with a plane mirror. Mention any inconvenience that the driver of the scooter will face while using it?

The side mirror of a scooter is convex because it can form images of object spread over large area , and helps the driver to see traffic behind them.

If convex mirror is replaced by plane mirror then he will not be able to see large area behind him due to which he may not drive properly , it may also cause damage to his vehicle or an accident.