Quantitative Aptitude ยท Reasoning

Time and Clocks

562 Questions

Time and clocks problems evaluate quantitative aptitude by testing concepts on clock gains, losses, and relative speeds of hands. Questions also cover global time zones and standard time calculations. These logical reasoning topics frequently appear in SSC and banking exams.

Clock gain or lossTime zonesAngle between handsStandard time calculationPrecise time measurement

Time and Clocks Questions

Multiple choice

Which ancient Chinese invention is used to measure the time?

  1. The sundial

  2. The hourglass

  3. The water clock

  4. The mechanical clock
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

The sundial is an ancient Chinese invention used to measure the time. It consists of a stick or rod that casts a shadow on a marked surface.

Multiple choice

What is the time interval between two successive high tides?

  1. 12 hours

  2. 24 hours

  3. 6 hours

  4. 8 hours
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

High tides occur approximately every 12 hours and 25 minutes.

Multiple choice

What is the time interval between two successive low tides?

  1. 12 hours

  2. 24 hours

  3. 6 hours

  4. 8 hours
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Low tides occur approximately every 12 hours and 25 minutes.

Multiple choice

What is the formula for time dilation?

  1. $t' = t / \sqrt{1 - v^2/c^2}$
  2. $t' = t \sqrt{1 - v^2/c^2}$
  3. $t' = t / c^2 - v^2$
  4. $t' = t c^2 - v^2$
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

The formula for time dilation is $t' = t / \sqrt{1 - v^2/c^2}$, where $t'$ is the time measured by an observer in a moving frame of reference, $t$ is the time measured by an observer in a stationary frame of reference, $v$ is the velocity of the moving object, and $c$ is the speed of light.

Multiple choice

What is the time dilation factor for an object moving at 99% of the speed of light?

  1. 7.09

  2. 10.00

  3. 15.00

  4. 20.00
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

The time dilation factor for an object moving at 99% of the speed of light is 7.09.

Multiple choice

Which ancient Mesopotamian invention allowed for the precise measurement of time?

  1. The sundial

  2. The hourglass

  3. The water clock

  4. The pendulum clock
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

The ancient Mesopotamians invented the water clock, which allowed for more accurate timekeeping.

Multiple choice

Which of the following is an example of a polyrhythm?

  1. 1 2 3 4

  2. 1 & 2 & 3 & 4 &

  3. 1 2 3 4 5 6

  4. 3 against 2
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

3 against 2 is an example of a polyrhythm, where two different rhythmic patterns are played simultaneously.