Question

2. Which of the following instruments measures time most accurately?
(a) Pendulum clock
(b) Sundial
(c) Quartz watches
(d) Sand clock​

Answer 1

Answer:

The Quartz watches measures time most accurately among the following.

Explanation:

There is a circuit built inside the Quarts watches that can work using the power from a battery. And these watches are so-called as their battery is made up of quartz crystal. The crystal will vibrate several thousand times as current passes through the circuit and the time required to make 32768 vibrations is termed as 1 second. This method will be more accurate than the other ones.

The Pendulum clock works on the principle of the swing time of the pendulum. The Position of the shadow is observed to measure time using the Sundial. A Sand clock will have two capsules, one upper and one lower. One of them will be filled with the amount of sand that will take a particular amount of time to empty one capsule and fill the other. All these three instruments are subjected to larger errors compared to Quartz watch.