E,F and G are yellow, red and cyan transparent light filters respectively. The color of a white opaque object when viewed through the arrangement of the filters above is
yellow
red
black
blue
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The answer is C bcs...
When d white light passes through E, only yellow is reflected; all the other colors are absorbed. When the yellow light gets to F, it is absorbed and black is reflected and the same black is reflected in G.
By KG
When viewing the white opaque object through the arrangement of filters E, F, and G, the yellow filter (E) absorbs blue light, leaving red and green to pass through. Then, the red filter (F) absorbs green light, leaving only red light. Finally, the cyan filter (G) absorbs red light, leaving no light to pass through. So, the white object will appear black when viewed through the arrangement of filters E, F, and G. Thank you for catching that mistake!
Step 1: What does a white object do?
A white object reflects all colors of light. So if you shine white light on it, all the colors bounce back (red, blue, green—all of them).
🟡
Step 2: What do the filters do?
Filters block some colors and allow others to pass through.
E (Yellow filter): allows red + green to pass through. Blocks blue.
F (Red filter): allows only red to pass through. Blocks green and blue.
G (Cyan filter): allows blue + green to pass through. Blocks red.
Step 3: Analyze the filter order (E ➝ F ➝ G)
We’re viewing the white object through these filters. So:
1. White light hits E (yellow filter):
White light has all colors (R + G + B).
Yellow filter allows only Red + Green to pass.
So now only Red + Green moves to the next filter.
2. That R + G light hits F (red filter)**:
Red filter allows only Red.
So now, only Red goes through to the next filter.
3. That Red light hits G (cyan filter)**:
Cyan filter allows Blue + Green only.
Red gets blocked completely here.
Final Result?
No light passes through to your eyes because Red was blocked by the cyan filter.
That means the white object will look BLACK, because no light reaches your eyes from it.
Correct Answer: C. Black
🧠 How to Never Forget:
Think of filters like security guards at doors:
Yellow lets 2 colors (R & G) in.
Red lets only Red in.
Cyan is picky and lets in only Blue & Green.
If the last guard (Cyan) doesn’t like Red, and Red is all we have left… then nothing gets through. That’s BLACK.
