Question

Which of the following animation changes the transparency of a view?

• A. Transparent Animation
• B. Alpha Animation
• C. Beta Animation
• D. Gamma Animation

Hint:

In CSS, Android, and iOS development, “Alpha” is always the property name used to adjust visual transparency. Fades in and fades out are calculated purely using Alpha interpolation.

Answer 1

The Correct Option is B

Step 1: Understanding Graphics Channels:
In computer graphics, every pixel’s color is typically defined by coordinate channels. The standard format is $RGBA$, where $R$ is Red, $G$ is Green, $B$ is Blue, and $A$ stands for Alpha.

Step 2: Defining the Alpha Channel:
The Alpha value acts as a scalar multiplier ranging between $0.0$ and $1.0$ (or $0\%$ to $100\%$). An Alpha of $0.0$ represents absolute transparency (completely invisible), while an Alpha of $1.0$ represents absolute opacity (solid object showing no background elements behind it).

Step 3: Evaluating Animation Actions:
An animation that smoothly shifts an object from visible to invisible (fading out) or invisible to visible (fading in) does so by altering this Alpha value over time. Therefore, this operation is standardly designated as an Alpha Animation. Option (A) is a generic term, while Options (C) and (D) are unrelated concepts.