If the current time is 10:00 am, the time after 400 hours will be :

The correct answer is Option (1) → 2:00 am

The clock shows the same time every 24 hours, so only the remainder of 400 on division by 24 matters (400 mod 24):

    \(400 = 24 \times 16 + 16\)

After 16 full days it is again 10:00 am, and 16 more hours remain:

    10:00 am + 14 hours = 12:00 midnight
    12:00 midnight + 2 hours = 2:00 am

So the time will be 2:00 am.