Question

Our eyes respond to wavelengths ranging from:

• A. 400 nm to 700 nm
• B. 700 nm to 800 nm
• C. 300 nm to 800 nm
• D. 400 nm to 800 nm

Hint:

The visible spectrum for human eyes ranges from approximately 400 nm to 700 nm.

Answer 1

The Correct Option is A

Step 1: Visible spectrum definition
The visible spectrum refers to the range of electromagnetic waves that can be detected by the human eye.

Step 2: Wavelength range
The human eye is sensitive to wavelengths approximately in the range:
\(400\ \text{nm} \text{ to } 700\ \text{nm}\)

Final Answer:
Thus, the correct range of visible light is \(400\ \text{nm} - 700\ \text{nm}\).