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प्रश्न
Which of the following cannot be used for the measurement of time?
विकल्प
A leaking tap.
Simple pendulum
Shadow of an object during the day.
Blinking of eyes.
उत्तर
Blinking of eyes.
Explanation:
Eyes do not blink at fixed interval of time.
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संबंधित प्रश्न
The basic unit of time is second.
Fill in the blank
If the departure time of a train on a railway ticket is printed as 20:35, then it will depart at ............
Answer the following in a word or two or in a sentence.
Name the unit which is common in both the MKS and CGS systems.
Define time.
______ is used to measure the accurate time of the activity.
The metric system of units was created by the ______ in 1790.
A ruler or scale used nowadays to measure length was invented by William Bedwell.
In earlier days, which instruments are used to measure time?
Fig. 13.4 shows an oscillating pendulum.
Time taken by the bob to move from A to C is t1 and from C to O is t2. The time period of this simple pendulum is
Assertion (A): The skill of estimation is important for all of us in our daily life.
Reason (R): The skill of estimation reduces our consumption of time.
