Measurement of Physical Quantities

 

 

As physical quantities are very important in physics, so also are their measurements. There are special instruments designed specifically for the measurement of each physical quantity.

We will be looking at the measuring instruments for the measurement of some quantities - length, mass and

volume.

1. LENGTH

Length can be measured with (a) Metre rule    (b) Vernier callipers    (c) Micrometer screw gauge

                                                            Metre rule

                                                            Tape rule

                                                            Vernier calliper

                                                            Micrometer screw gauge

2. MASS

The mass of a body can be measured with a balance such as (a) beam balance    (b) lever balance    (c) chemical balance    (d) direct reading balance

The weight of a body can be measured with a spring balance.

Different types of balance

3. VOLUME

The volume of a liquid can be measured with a (a) measuring cylinder    (b) pipette    (c) burette

4. TIME

Time is usually indicated nowadays with clocks or watches.

                                                                Stopwatch

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