Question

Which colour has minimum wave length?

• A. Purple
• B. Yellow
• C. Green
• D. Blue

Hint:

Purple bends the most in a prism due to its lowest wavelength.

Answer 1

The Correct Option is A

Among visible colours, purple (or violet) has the shortest wavelength.
Wavelength range for purple/violet is ~380–450 nm.
Comparative ranges:
- Purple: ~380–450 nm
- Blue: ~450–495 nm
- Green: ~495–570 nm
- Yellow: ~570–590 nm
Hence, the correct answer is Purple.
\[ \boxed{\text{Purple}} \]