X-rays are similar to:

Explanation

Option A: Cathode rays are streams of electrons that are emitted from a cathode, which is a negatively charged electrode. Cathode rays are not similar to X-rays in nature because they are a form of particle radiation, while X-rays are a form of electromagnetic radiation. Option B: Canal rays are streams of positive ions that are emitted from a cathode. Canal rays are not similar to X-rays in nature because they are a form of particle radiation, while X-rays are a form of electromagnetic radiation. Option C: X-rays are similar in nature to gamma rays. Both X-rays and gamma rays are forms of electromagnetic radiation, and they have a very high frequency and a very short wavelength. They are also both ionising radiation, which means that they can damage DNA and other molecules in living cells. X-rays and gamma rays differ in their origin. X-rays are typically produced when high-energy electrons interact with matter, while gamma rays are emitted from the nuclei of radioactive atoms. Option D: Beta rays are streams of electrons that are emitted from the nuclei of radioactive atoms. Beta rays are similar to X-rays in nature because they are both ionising radiation, which means that they can damage DNA and other molecules in living cells. However, beta rays are a form of particle radiation, while X-rays are a form of electromagnetic radiation.