The region of spectrum, which extends beyond violet end of visible spectrum is called ............ spectrum.

Options

A. Ultraviolet
B. Infrared
C. Green Yellow
D. Green

Explanation

To solve the question, we need to identify the region of the spectrum that extends beyond the violet end of the visible spectrum. Here’s a step-by-step breakdown of the solution:

### Step 1: Understand the Visible Spectrum
The visible spectrum is the part of the electromagnetic spectrum that can be seen by the human eye. It consists of seven colors, which are red, orange, yellow, green, blue, indigo, and violet (often abbreviated as ROYGBIV).

### Step 2: Identify the Ends of the Visible Spectrum
In the visible spectrum, violet is the color at the end of the spectrum with the shortest wavelength. The visible spectrum ranges from approximately 400 nm (violet) to about 700 nm (red).

### Step 3: Determine What Lies Beyond Violet
To answer the question, we need to identify what type of electromagnetic radiation exists beyond the violet end of the visible spectrum.

### Step 4: Recall the Electromagnetic Spectrum
The electromagnetic spectrum includes various types of radiation, listed from shortest to longest wavelength as follows:
- Gamma rays
- X-rays
- Ultraviolet rays
- Visible light (including violet)
- Infrared rays
- Microwaves
- Radio waves

### Step 5: Identify the Correct Answer
Since violet is at the end of the visible spectrum, the region that extends beyond violet is known as the ultraviolet (UV) spectrum.

### Conclusion
Thus, the region of the spectrum that extends beyond the violet end of the visible spectrum is called the **ultraviolet spectrum**.

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