Class 11 Physics Units and Measurements Measurement of Length

Measurement of Length

Length can be measured using metre scale (10-3m to 102m), verniercallipers (10-4m) and screw gauge and spherometer (10-5m).

Range of Length

Size of object or distance

Length (m)

Size of proton

10-15

Size of atomic nucleus

10-14

Length of typical virus

10-8

Wavelength of light

10-7

Thickness of paper

10-4

Height of Mount Everest above sea level

104

Radius of earth

107

Distance of moon from earth

108

Distance of sun from earth

1011

Distance of pluto from sun

1013

Size of our galaxy

1021

Distance to Andromeda Galaxy

1022

Distance to observable universe boundaries

1026

 

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