Question

Which of the following is a one- dimensional diagram?
A.Bar
B.Square
C.Rectangle
D.A graph

Answer 1

Hint: As, we know dimension is a property which tells us about the size and structure of any diagram, figure or any object. Here, one- dimensional diagram means a diagram which has only one dimension or it is representing its qualitative or quantitative property in only one dimension. So, from the given options, bar is a type of chart which represents 2 quantities to get a single output or we can say that bar has input of 2 dimensions and its output can be 1. Now, talking about square and rectangle, these both figures have 2 dimensions as they have both length and breadth as their dimensions. So, they also have 2 dimensions. Now, moving to the last option, a graph can have at least 1 dimension, for example we can represent a point $x = 0$, on a graph and as we know $x = 0$represents only one dimension and it can be shown on a graph.

Complete step-by-step answer:
As per the given options in the question,
Both square and rectangle are 2 dimensional diagram, as they have length and breadth both,
Now, talking about graphs, it can have at least 1 dimension, for example $x = 1$ it is a point which has 1 dimension and it can be represented on a graph.
Hence, a graph has one-dimension,
So, the correct option is D.

Note: As we know, these types of questions are always confusing. So, to get the question correctly answered, we have to study every given option deeply and considering all the exceptions, we should mark our option correctly.