Uncertainty in Measurement

IMPORTANT

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

HARD
IMPORTANT

In the final answer of the expression

(29.220.2)(1.79× 10 5 ) 1.37

the number of significant figures is :

EASY
IMPORTANT

The dimensions of universal gravitational constant are 

EASY
IMPORTANT

The unit of permittivity of free space,   ε 0  is:

EASY
IMPORTANT

The dimensional formula for magnetic flux is

EASY
IMPORTANT

The magnetic moment has dimensions of:

EASY
IMPORTANT

Using mass(M), length(L), time(T) and current(A) as the fundamental quantities, the dimensions of permeability are 

EASY
IMPORTANT

Assertion : Specific gravity of a fluid is a dimensionless quantity.

Reason : It is the ratio of density of fluid to the density of water.

EASY
IMPORTANT

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

EASY
IMPORTANT

Identify the pair whose dimensions are equal –

EASY
IMPORTANT

Find the value of 2×1012+4×1010.

EASY
IMPORTANT

The position of a particle at time t is given by the equation xt=v0A1-eAt, where v0= constant and A>0. Dimensions of U0 and A respectively are

EASY
IMPORTANT

The number of significant figures are present in 208 is _____.

MEDIUM
IMPORTANT

Given the number: 161 cm; 0.161 cm; 0.0161 cm. The number of signification figures for three numbers is:

MEDIUM
IMPORTANT

The number of significant figures are present in 500.0 is _____.

HARD
IMPORTANT

The time period of a body undergoing simple harmonic motion is given by T=paDbSc, where p is the pressure, D is density and S is surface tension. The values of a,b and c respectively are

EASY
IMPORTANT

Among the following, the correct statement is :

HARD
IMPORTANT

How many significant figures are present in the following number?

0.00456

HARD
IMPORTANT

Represent the following number in scientific notation:

3068.789