Measurement of Time

The graph between the time period and the length of a simple pendulum is an ellipse.

Choose a larger unit to measure time from the following options.

List the larger units to measure time.

How an atomic clock is used to define a unit of time?

Define one second in terms of atomic clock.

Explain the steps involved in measuring of time using a stop clock.

Explain the use of a stop clock.

The standard unit of time is

If the length of a simple pendulum is increased by $25\%$, then what is the change in its time period?

Second's pendulum's time period is precisely _____ second (s).

Second's pendulum is a pendulum which takes accurately two seconds to move from one extreme position to another.

The formula of the effective length of a simple pendulum is: $L=l+e+r$.

Here $L$ depicts the distance between the point of suspension and centre of the bob.

$l$ depicts is the length of the string from the top of the bob to the hook.

$e$ depicts the length of the hook.

$r$ depicts the radius of the bob.

There are $365\frac{1}{4}$ days in a leap year and leap year occurs once in $4$ years.

What will be the relation between the time periods to two pendulums of lengths $1 \mathrm{m} \left({\mathrm{L}}_1\right)$ and $9 \mathrm{m} \left({\mathrm{L}}_2\right)$?

One _____ month $=27.3 \mathrm{days}$

What is the significance of atomic time standards?

Which physical quantity is the reciprocal of time period?

How is time measured in ancient water clocks?

What is the role of a chronometer?

Which factor causes time dilation in relativistic physics?