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Question

The image of a clock in a plane mirror shows a wrong time as 08:45. Assuming the clock did not have number markings on it, the correct time would be:

A
2:45
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B
3:15
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C
3:45
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D
4:15
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Solution

The correct option is B 3:15
Remember, an extended object like a clock will form a laterally inverted image in a plane mirror. That is, left and right will be interchanged. So, as the time the image clock shows is 8:45, it will look like:

Hence the real clock would look like:

Hence, the correct time is 3:15.


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