×

×

## Physics / Measurement of Length, Volume, Mass and Density

### Physics / Measurement of Length, Volume, Mass and Density

To measure a physical quantity such as length, mass, time, current, we use an instrument such as a metre scale or vernier callipers for length, a balance for mass, a stop watch for time, an ammeter for current. These measurement are done with the help of a scale. Learn what is the minimum scale of each instrument and find out their least count. The least count of an instrument is the smallest measurement that can be taken accurately with it. e.g. least count of a stop watch is 0.5 second.
Learn the principle of vernier calliper and screw gauge and find out the possible errors done by a user while taking any measurement, also find how to take accurate readings.
Learn about significant digits used in measurements and calculate different types of errors. The significant figures are the number of digits used to express the measurement of the physical quantity such that last digit in it is doubtful and rest all digits are accurate. e.g Reading 1.2 has two significant figures which are 1 and 2 ,where 1 is fully reliable while the second digit is uncertain.   Exercises
Lessons
Topics
Exercises
Lessons
Topics
• ### Measurement of Length, Volume, Time and Mass - SmartTest

A SmartTest on Measurement of Length, Volume, Time and Mass

• Accessed by: 353 Students
• Average Time: 00:04:10
• Average Score: 54.66
• Questions: 26
• Measurement of length and volume
• Vernier calipers
• Screw gauge
• Measurement of time- stop watch, stop clock, simple pendulum
• Measurement of mass- A beam balance for comparison of masses
• ### Measurement of Length, Volume, Mass and Densi

Learnhive Lesson on Measurement of Length, Volume, Mass and Density

• Accessed by: 552 Students