Important Concepts

The magnitude of the difference between the individual measurement & the true value of the quantity is called the ________________ of the measurement.

Displacement is a ______ quantity.

An important method in measuring the distance of a planet or star from the Earth is the _______ method.

Wavelength of light (in m) =

• 10^-8

• 10^-7

• 10^-13

• 10^-5

The _______ of a measurement is a measure of how close the measured value is to the true value of the quantity. While, _______ tells us to what resolution the quantity is measured.

Density can be expressed as :

• [ML^-3]

• [ML^-3 T⁰ ]

• [ML³ T⁰]

• [MLT^-2]

Instantaneous velocity is represented by slope of ______ & average velocity is represented by slope of ______ of s-t curve.

Dyne is the unit of force & n₁ = 100 in cgs system. In the new system; M=1kg, L=1m & T=1min. Determine the value of n₂.

{Force =[MLT^-2]}