Question

Which colour has maximum light?

• A. Blue
• B. Yellow
• C. Red
• D. Black

Hint:

Brightness is not about frequency; it's about light reflectance. Yellow reflects more light than other colours.

Answer 1

The Correct Option is B

Step 1: Understanding colour brightness
Different colours of the visible spectrum have different energy levels and brightness (light intensity).
Brightness depends on how much light a colour reflects.

Step 2: Evaluating all options
(A) Blue $\Rightarrow$ Blue has a high frequency but does not reflect as much visible light as yellow.
(B) Yellow $\Rightarrow$ Yellow is the brightest colour in the visible spectrum. It reflects the most light and appears luminous.
(C) Red $\Rightarrow$ Red has lower frequency and moderate brightness.
(D) Black $\Rightarrow$ Black absorbs all light and reflects none, hence has the least brightness.

Step 3: Scientific fact
The yellow colour is most sensitive to the human eye and gives a maximum feeling of brightness.
That's why many road signs and safety vests are in yellow.
Conclusion:
Hence, the colour with maximum perceived brightness/light is Yellow.
\[ \boxed{\text{Correct Answer: (B) Yellow}} \]