Question

When the scale in a map is represented by a straight line divided into equal parts, it is called-
A) Statement scale
B) Linear or graphical scale
C) Mercalli scale
D) Representative fraction

Answer 1

Hint:It is also called a bar scale, a graphic scale or a graphic scale.
It is a way of physically displaying the scale of a map, a nautical chart, an engineering drawing or an architectural drawing. The scale bar is a common feature in map templates.

Complete answer:
These scales are placed on maps which helps people to understand different things along with the map. Several types of maps indicate different measures.
 Statement scales show the scale in words or we make a statement about it such as- one centimetre to one kilometre. This indicates that 1cm is equivalent to 1km on the map.
Option (A) is not the correct answer.

Linear or graphical scale is actually a straight line whose length is in certain proportion to the actual length on the ground. It is divided into primary and secondary division so that advantages and disadvantages can easily be read from it. Option (B) seems to be the right answer.

Mercalli scale a scale formerly used to describe the magnitude of an earthquake; an earthquake detected only by seismographs is a I and an earthquake that destroys all buildings. Option(C) is not the right answer.

A representative fraction indicates the ratio between the number of units on the map to the number of units on the ground. Representative fractions are a unit-less relation between one “unit” on the map and however many “units” of the same type on the ground. Option (D) is not the right answer.

Hence the correct answer is option B.

Note:(i) Distances can easily be measured with the help of linear scale.
(ii) If the map is photographically enlarged or reduced, the linear scale is also enlarged or reduced in the same ratio and remains true to the map.
(iii) These scales are a means of visually showing the scale of a map, nautical chart, engineering drawing, or architectural drawing.