Solved conceptual questions on Measurement of First Year Physics
Define the number π and show that 2π radians = 360°
Define the terms error, uncertainty, precision and accuracy in measurement.
Explain several repetitive phenomena occurring naturally which could serve reasonable time standard.
Why do we find it useful to have two units for the amount of substance, kilogram and mole?
Show that the famous Einstein equation E = mc2 is dimensionally consistent?
Deduce the dimensions of gravitational constant.
Find the dimensions of Kinetic Energy?
Give the drawbacks to use the period of a pendulum as time standard.
Are radian and steradian the base units? Justify your answer.
What does the word ‘micro’ signify in the words ‘microwave oven’?
Density of air is 1.2 kgm-3. Change it in gm cm3
An old saying is that ‘A chain is only as strong as its weakest link’. What analogous statement can you make regarding measurement.
Differentiate between the following.