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ICSE Class 9 Physics Question 4 of 19

Reflection of Light — Question 18

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Question

Question 1(xviii)

The figure shows the image of a clock as seen in the plane mirror. The correct time is :

The figure shows the image of a clock as seen in the plane mirror. The correct time is : Concise Physics Solutions ICSE Class 9.
  1. 4:30
  2. 6:30
  3. 2:30
  4. 3:30
Answer

2:30

Reason — As the mirror image of the clock shows that hour hand is pointing slightly past 9 and minute hand at 6 (i.e., 30 minutes) so the mirror image shows 9:30. Since a plane mirror always produces laterally inverted images so in this case the hour hand should actually point slightly past 2 and minute hand will suffer no inversion due to symmetry so the clock will show 2:30.