Photogrammetry MCQ with answer and solution

Concept

A map shows selected features with standard symbols, so details are clearer than on an aerial photo.

Step-by-step solution

1. A map is a symbolic representation. Each feature (road, river, building) is drawn with a standard symbol and named. 2. An aerial photo is a true picture. It shows every object as it looks from above. 3. On a photo, features may be hidden by trees or shadows, or may look similar in tone, so they are hard to identify. 4. So, due to symbols, clarity of details is more on a map than on a photo.

Explanation

A map uses clear standard symbols and labels for each feature, so details are easy to read. An aerial photo shows the real image, but features can be unclear because of tone, shadow, scale and tilt. So clarity of details is more on a map.

Why the other options are wrong

A: Symbols make details clearer on a map, not less clear. C: This says the same thing as B in other words, but B is the direct standard statement. D: A photo shows more objects, but they are less clear than map symbols.

Shortcut

Symbols mean clarity, so the map is clearer. The photo is complete but less clear.

Common mistake

Students confuse 'more details' (the photo has more) with 'more clarity' (the map has more).