When a clock strikes 'n' times, there are 'n-1' intervals between the strikes. The time taken to strike five times means there are 5 - 1 = 4 intervals. If 4 intervals take 5 minutes, then the time taken for one interval is 5 minutes / 4 = 1.25 minutes. To strike nine times, there are 9 - 1 = 8 intervals. At the same speed, the time taken for 8 intervals will be 8 1.25 minutes = 10 minutes.
k >= 1666.633... Since k must be an integer, the smallest integer value for k is 1667. The least six- digit number is N = 60 1667 + 2. 60 1667 = 100020. N = 100020 + 2 = 100022. The number is 100022. The sum of the digits of this number is 1 + 0 + 0 + 0 + 2 + 2 = 5. 54. If a clock takes 5 minutes to strike five times at 5 o'clock, then how much time will it take to strike nine times at 9 o'clock at the same speed?
Asked in JPSC CS Prelims 2011 · Topic: Measurement/Unit (Errors in Measurement (Types, Absolute, Relative, Percentage, Propagation))
More Physics questions
- When a chain is used at a temperature more than the temperature it was calibrated, the error in measured length will be
- A student measures certain lengths using a meter scale having least count equal to 1 mm. Which one of the following measurements is more precise ?
- Angstrom is a unit of
- 'Light-year' is a unit of
- The size of particles being studied in 'nano- technology' is about
- The pressure exerted by a 760 mm column of mercury at 0 °C is known as
- One astronomical unit is the average distance between
- Light year is a unit of