Mobile App Design UI Design Principles & Visual Hierarchy

Question 1

Which design principle states that elements close to each other are perceived as a group?

Accepted Answer

Proximity

Answer

Similarity

Answer

Continuity

Answer

Closure

Question 2

What is the recommended minimum touch target size for interactive elements in mobile apps according to Apple's Human Interface Guidelines?

Accepted Answer

44x44 pt

Answer

24x24 pt

Answer

32x32 pt

Answer

60x60 pt

Question 3

Which color contrast ratio does WCAG 2.1 AA require for normal text on a mobile interface?

Accepted Answer

4.5:1

Answer

2:1

Answer

3:1

Answer

7:1

Question 4

In mobile typography, what is the primary purpose of establishing a type scale?

Accepted Answer

To create consistent visual hierarchy across screens

Answer

To limit font file sizes

Answer

To comply with app store requirements

Answer

To reduce rendering time

Question 5

Which layout grid system is most commonly used in mobile app design to maintain consistent spacing?

Accepted Answer

8pt grid system

Answer

12-column grid

Answer

Golden ratio grid

Answer

Fibonacci grid

Question 6

What does 'visual weight' refer to in mobile UI design?

Accepted Answer

How much an element draws the user's attention relative to others

Answer

The file size of UI assets

Answer

The physical dimensions of a device

Answer

The load time of a screen