Same chapter3 marksDifficulty: Medium
The main scale division of a vernier calliper is 1 mm and its vernier has 10 divisions. Find its least count.
Measurements and Experimentation
3 marksDifficulty: Medium
Why is the simple pendulum used to measure time, and what is meant by an oscillation?
Original Khojo Papers practice question — not from a past board paper.
Answer
A simple pendulum swinging through a small angle takes the same time for every oscillation whatever the amplitude, a property called isochronism, so it can be used to keep time. One oscillation is one complete to-and-fro movement, from the extreme position back to the same extreme position.
No citable source has been recorded for this record. Treat it as practice material, not as fact.
Explanation
The time period depends only on the length and on g.
Related questions
From the same topic and chapter, at a similar level.
Same chapter3 marksDifficulty: Medium
A pendulum of length 1 m has a time period of 2 s. What length would give a time period of 1 s?
Measurements and Experimentation
Same chapter3 marksDifficulty: Medium
What is meant by the least count of an instrument? State the least count of vernier callipers and of a screw gauge.
Measurements and Experimentation
Same chapter3 marksDifficulty: Medium
The length of a seconds pendulum is about 100 cm. What is its time period, and what does the name mean?
Measurements and Experimentation
Same chapter3 marksDifficulty: Medium
State the factors on which the time period of a simple pendulum depends and those on which it does not.
Measurements and Experimentation
Same chapter2 marksDifficulty: Easy
Convert 72 km h−1 into m s−1.
Measurements and Experimentation