Uncertainty in Measurement
Uncertainty in Measurement: Overview
This topic covers concepts, such as, Scientific Notation, Multiplication and Division of Exponential Numbers, Multiplication and Division of Significant Figures & Dimensional Analysis etc.
Important Questions on Uncertainty in Measurement
In the final answer of the expression
the number of significant figures is :

The dimensions of universal gravitational constant are

The unit of permittivity of free space, is:

The dimensional formula for magnetic flux is

The magnetic moment has dimensions of:

Using mass, length, time and current as the fundamental quantities, the dimensions of permeability are

Assertion : Specific gravity of a fluid is a dimensionless quantity.
Reason : It is the ratio of density of fluid to the density of water.

Which one of the following represents the correct dimensions of the coefficient of viscosity?

Identify the pair whose dimensions are equal –



Find the value of .

The position of a particle at time is given by the equation , where constant and . Dimensions of and respectively are

The number of significant figures are present in is _____.

Given the number: . The number of signification figures for three numbers is:

The number of significant figures are present in is _____.

The time period of a body undergoing simple harmonic motion is given by where is the pressure, is density and is surface tension. The values of and respectively are

Among the following, the correct statement is :

How many significant figures are present in the following number?

Represent the following number in scientific notation:
