While withdrawing cash from an ATM machine, one needs to be very careful of the surroundings. What mirror would you suggest to put on an ATM machine so that people are aware if anyone is sneaking up on them?
A
Cylindrical mirror
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B
Convex mirror
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C
Concave mirror
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D
Plane mirror
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Solution
The correct option is B Convex mirror Convex mirrors are usually placed on top of the ATM machines. These mirrors provide a wider viewing angle than a plane mirror. This wide angle will help you getting more information/overview of whats behind you.