Wavelength of green light is

A) 400-450 nm

B) 500-550 nm

C) 660-720 nm

D) 720-800 nm

The wavelength of green light falls within a specific range on the electromagnetic spectrum. To determine the correct answer from the options provided, we need to look at the general characteristics of visible light and where green light is situated within that spectrum.

Understanding Visible Light

Visible light is the portion of the electromagnetic spectrum that can be detected by the human eye. It ranges from approximately 380 nm (nanometers) to about 750 nm. Each color corresponds to a different wavelength:

• Violet: 380-450 nm
• Blue: 450-495 nm
• Green: 495-570 nm
• Yellow: 570-590 nm
• Orange: 590-620 nm
• Red: 620-750 nm

Identifying the Wavelength of Green Light

From the information above, we can see that green light is typically defined as having wavelengths ranging from about 495 nm to 570 nm. This range is crucial for various applications, including photography, lighting, and even plant growth, as plants utilize green light for photosynthesis.

Evaluating the Options

Now, let’s analyze the options you provided:

• A) 400-450 nm - This range corresponds to violet light.
• B) 500-550 nm - This range falls within the green light spectrum.
• C) 660-720 nm - This range corresponds to red light.
• D) 720-800 nm - This range is in the infrared spectrum.

Based on this evaluation, the correct answer is B) 500-550 nm. This range accurately reflects the wavelengths associated with green light, making it the best choice among the options given.

Real-World Applications

Understanding the wavelength of green light is not just an academic exercise; it has practical implications. For instance, in photography, different filters can be used to enhance or reduce certain colors based on their wavelengths. In botany, knowing that plants absorb light most efficiently in the blue and red wavelengths, while reflecting green, helps in designing better growth lights for indoor gardening.

In summary, the wavelength of green light is indeed found in the range of 500-550 nm, which is essential for various scientific and practical applications. This knowledge not only deepens our understanding of light but also enhances our ability to utilize it effectively in different fields.