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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:
  1. 4:15
  2. 2:45
  3. 3:15
  4. 3:45


Solution

The correct option is C 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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