Question

How many dimensions are there ?

Answer 1

Hint: We have to solve this question by stating the \[3\] dimensions which are there \[1-D{\text{ }},{\text{ }}2-D\] and \[3-D\] . We will state what we mean by these terms . We will also give examples of various shapes and motions to specify each of these dimensions . We will also mention the coordinates of the dimensions .

Complete step-by-step answer:
There are three types of dimensions as stated below :
 \[\left( 1 \right)\] \[1{\text{ }}-{\text{ }}D{\text{ }}:\;\]
It is referred to as one-dimensional . By this type of dimension we mean that we are only moving in a particular single direction . In \[1-D\] the motion of an object is along a single straight line . It has only one of the coordinates like only \[x{\text{ }}-{\text{ }}axis\] or only \[y-{\text{ }}axis\] . A straight line represents one-dimensional objects .
Example : if a car is moving on a straight path without turning it is said as \[1-D\] motion .

 \[\left( 2 \right)\] \[2{\text{ }}-{\text{ }}D{\text{ }}:\]
It is referred to as two-dimensional . By this type of dimensions we mean that the movement is along the two axes . The shapes like square , rectangle , triangle etc. these are referred to as \[2{\text{ }}-{\text{ }}D\] objects . Units such as the area of an object is regarded as \[2{\text{ }}-{\text{ }}D\] quantity . In \[2{\text{ }}-{\text{ }}D\] , length and width are the two parameters of an object . \[2{\text{ }}-{\text{ }}D\] system works on two coordinate axes \[x{\text{ }}-{\text{ }}axis\] and \[y{\text{ }}-{\text{ }}axis\] simultaneously .

 \[\left( 3 \right)\] \[3{\text{ }}-{\text{ }}D{\text{ }}:\]
It is referred to as three-dimensional . By this type of dimensions we mean that the movement is along the three axes . The shapes like cube , cuboid , cone , frustum , cylinder etc. these are referred to as \[3-D\] objects . Units such as volume of an object are regarded as \[3-D\] quantity . In \[3-D\] , length , width and height are the three parameters of an object . \[3-D\] system works in three coordinate axes \[x-axis{\text{ }},{\text{ }}y-axis\] and \[z-axis\] .

Note: These three are the visible dimensions which we can see with our naked eyes . But apart from these three types of dimensions it is said that there are many more types of dimensions which are still to be recognised , whereas time is also said to be the fourth dimension .