Question

Identify the category of the map scales given below.
P) 1:1000
Q) 1:5000
R) 1:50000
S) 1:100000

• A. [P, Q] - large scale; [R, S] - small scale
• B. [P, Q] - small scale; [R, S] - large scale
• C. [P] - large scale; [Q, R, S] - small scale
• D. [P] - small scale; [Q, R, S] - large scale

Hint:

A larger representative-fraction value (smaller denominator n in 1:n) means a larger map scale; rank 1:1000, 1:5000, 1:50000 and 1:100000 accordingly.

Answer 1

The Correct Option is A

Step 1: Recall the standard classification of map scales.
Maps are broadly classified by their representative fraction (RF), the ratio 1 : n. A large scale map has a small denominator n (each unit on the map represents a small ground distance, showing more detail over a small area), typically RF between about 1:1,000 and 1:25,000, used for cadastral, engineering or town planning purposes. A small scale map has a large denominator n (each unit represents a large ground distance, showing less detail over a large area), typically RF of 1:50,000 and smaller, used for topographic, regional or atlas mapping.
Step 2: Classify P and Q.
P is 1:1000 and Q is 1:5000, both with small denominators, so both fall in the large scale range.
Step 3: Classify R and S.
R is 1:50000 and S is 1:100000, both with large denominators, so both fall in the small scale range.
Step 4: Match to the given options.
Grouping [P, Q] as large scale and [R, S] as small scale corresponds exactly to option (A). Options (B), (C) and (D) either invert the large/small labels or split the P, Q pair incorrectly.\[ \boxed{\text{[P, Q] large scale; [R, S] small scale}} \]