Examples of mirror and water reflections are shown in the figures below:

An object appears as the following image after first reflecting in a mirror and then reflecting on water:

The original object is:

A
B
C
D
Step 1: Understand the transformation sequence.
The object undergoes two distinct transformations: Mirror reflection: A horizontal flip of the original object. Water reflection: A vertical flip of the mirrored object. Step 2: Reverse the transformations.
To find the original image, reverse the transformations step by step: Reverse the water reflection (vertical flip) applied to the final image \(5:24\), resulting in: \[ 4:25 \] Reverse the mirror reflection (horizontal flip) applied to \(4:25\), resulting in: \[ h2:5 \] Step 3: Confirm the result.
The original image before any transformations is:
Final Answer: (1)





Consider a system represented by the block diagram shown below. Which of the following signal flow graphs represent(s) this system? Choose the correct option(s).

Consider the unity-negative-feedback system shown in Figure (i) below, where gain \( K \geq 0 \). The root locus of this system is shown in Figure (ii) below.
For what value(s) of \( K \) will the system in Figure (i) have a pole at \( -1 + j1 \)?
