Linear accelerator produces:
**Core Concept**
A linear accelerator is a device used in radiation therapy for cancer treatment. It produces high-energy electrons or photons by accelerating charged particles through a series of electric fields. This process enables the delivery of precise doses of radiation to targeted areas within the body.
**Why the Correct Answer is Right**
The correct answer is **C. X-rays**. Linear accelerators work by accelerating electrons to high speeds, typically in the range of millions of electronvolts. When these electrons collide with a metal target, they produce X-rays through a process known as bremsstrahlung radiation. The resulting X-rays have a broad energy spectrum and are used to treat various types of cancer.
**Why Each Wrong Option is Incorrect**
**Option A:** This option is incorrect because linear accelerators do not produce **protons**. Proton therapy is a different type of radiation therapy that uses protons instead of electrons or X-rays.
**Option B:** This option is incorrect because linear accelerators do not produce **gamma rays**. Gamma rays are high-energy electromagnetic radiation produced by radioactive decay, not by accelerating charged particles.
**Clinical Pearl / High-Yield Fact**
It's essential to remember that linear accelerators are commonly used in radiation oncology to deliver precise doses of radiation to cancerous tumors. The ability to control the energy and intensity of the radiation allows for effective treatment while minimizing damage to surrounding healthy tissues.
**Correct Answer:** C. X-rays