Question

why does a convex mrrior is used as a rear view mirrior ?

Answer 1

The convex mirror is used as a rear view mirror due to the following reasons
1- It forms virtual image which is erect and can be interpreted correctly by our brain.

2- It forms small image which are very essential in case while driving because it will help the driver to see a wide ranging area through the convex mirror.

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Answer 2

convex mirror used as a rear view mirror . it is because convex mirror shows virtual and small images . while driving we all need a mirror to cover all the backside area so we use convex mirror .