Question

Which colour has maximum wave length?

• A. Yellow
• B. Red
• C. Green
• D. White

Hint:

Red light bends the least due to its longest wavelength. Used in fog lights and signals.

Answer 1

The Correct Option is B

Colours of visible light have different wavelengths:
- Violet: ~400 nm
- Blue: ~450–495 nm
- Green: ~495–570 nm
- Yellow: ~570–590 nm
- Orange: ~590–620 nm
- Red: ~620–750 nm
Red has the longest wavelength in the visible spectrum.
White is not a single wavelength; it's a mix of all colours.
\[ \boxed{\text{Red}} \]