A CLOCK HAVING MARKS INSTEAD OF NUMBERS ON ITS DIAL APPEARS TO INDICATE 4.35 WHEN VIEWED THROUGH A MIRROR.WHAT IS THE CORRECT TIME?
A MAN IS RUNNING AWAY FROM A PLANE MIRROR AT THE RATE OF 10m/s.WITH WHAT SPEED IS HE RECEDING FROM HIS OWN IMAGE?

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Solution

1-Here clock shows time 4:35 in the mirror, thus the actual time will be 7:25. You can solve it quickly if you remember that the sum of actual time and image time is always 12 hours.
2- Speed with which the man is running away from his image=10+10=20 m/s

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A CLOCK HAVING MARKS INSTEAD OF NUMBERS ON ITS DIAL APPEARS TO INDICATE 4.35 WHEN VIEWED THROUGH A MIRROR.WHAT IS THE CORRECT TIME?A MAN IS RUNNING AWAY FROM A PLANE MIRROR AT THE RATE OF 10m/s.WITH WHAT SPEED IS HE RECEDING FROM HIS OWN IMAGE?

1-Here clock shows time 4:35 in the mirror, thus the actual time will be 7:25. You can solve it quickly if you remember that the sum of actual time and image time is always 12 hours. 2- Speed with which the man is running away from his image=10+10=20 m/s

A CLOCK HAVING MARKS INSTEAD OF NUMBERS ON ITS DIAL APPEARS TO INDICATE 4.35 WHEN VIEWED THROUGH A MIRROR.WHAT IS THE CORRECT TIME?
A MAN IS RUNNING AWAY FROM A PLANE MIRROR AT THE RATE OF 10m/s.WITH WHAT SPEED IS HE RECEDING FROM HIS OWN IMAGE?

1-Here clock shows time 4:35 in the mirror, thus the actual time will be 7:25. You can solve it quickly if you remember that the sum of actual time and image time is always 12 hours.
2- Speed with which the man is running away from his image=10+10=20 m/s