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Question

Once I suddenly woke up in bed and, by mistake, saw the image of my clock in a plane mirror and panicked that I was late. The time it showed was8:45. (The clock did not have numbers on it). The correct time was:
  1. 8:45
  2. 3:15
  3. 4:15
  4. 3:45


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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