What is the range of wavelength for visible light?
400-700 nm
Understanding the Visible Light Wavelength Range
Visible light is the portion of the electromagnetic spectrum that is visible to the human eye. Different colors of light correspond to different wavelengths within this spectrum.
The electromagnetic spectrum includes many types of waves, such as radio waves, microwaves, infrared radiation, visible light, ultraviolet radiation, X-rays, and gamma rays. These waves differ in their wavelengths and frequencies.
For visible light, the range of wavelengths is typically accepted to be from approximately 400 nanometers (nm) to 700 nanometers (nm).
Let's look at the different colors and their approximate wavelength ranges within the visible spectrum:
| Color | Approximate Wavelength Range (nm) |
|---|---|
| Violet | 400 - 450 |
| Indigo | 450 - 480 |
| Blue | 480 - 510 |
| Green | 510 - 550 |
| Yellow | 550 - 590 |
| Orange | 590 - 620 |
| Red | 620 - 700 |
Considering the common range for the entire visible light spectrum, we compare it with the given options:
- Option 1: 400-700 nm
- Option 2: 400-900 nm
- Option 3: 300-700 nm
- Option 4: 400-800 nm
The range that aligns with the commonly accepted wavelength range for visible light is 400-700 nm.
The unit nanometer (nm) is used to measure wavelength, where $\text{1 nm} = \text{10}^{-9}$ meters.
Therefore, the range of wavelength for visible light is approximately 400 nm to 700 nm.
Important Questions from Electromagnetic Waves
Consider the two statements given below :
Statement-1: Infrared waves are also called heat waves.
Statement-2: Water molecules readily absorb infrared waves.
Select the correct answer using the code given below:
Consider the following statements about visible light, UV light and X-rays:
1. The wavelength of visible light is more than that of X-rays.
2. The energy of X-ray photons is higher than that of UV light photons.
3. The energy of UV light photons is less than that of visible light photons.
Which of the statements given above is/are correct?The wavelength of X-rays is of the order of
Which of the followings are the characteristics of electromagnetic waves?
1) They are elastic waves.
2) They can also move in a vacuum.
3) They have electric and magnetic components that are mutually perpendicular.
4) They move with a speed equal to 3 lakh meters per second.
Select the correct answer using the code given below:
Which of the following devices is based on the phenomenon of electromagnetic induction?
