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Radioactivity Video Lecture | Crash Course for IIT JAM Physics
FAQs on Radioactivity Video Lecture - Crash Course for IIT JAM Physics
| 1. What is radioactivity and how does it occur? |  |
Ans. Radioactivity is the spontaneous emission of radiation from the nucleus of an unstable atom. It occurs when the nucleus of an atom undergoes a radioactive decay, releasing energy in the form of radiation.
| 2. What are the types of radiation emitted during radioactivity? | |
Ans. There are three types of radiation emitted during radioactivity: alpha particles, beta particles, and gamma rays. Alpha particles consist of two protons and two neutrons, beta particles are high-energy electrons or positrons, and gamma rays are electromagnetic waves.
| 3. How does radioactivity affect living organisms? | |
Ans. Radioactivity can have harmful effects on living organisms. Exposure to high levels of radiation can damage cells and DNA, leading to various health problems such as cancer, genetic mutations, and even death. However, low levels of radiation are present in our environment and are usually not harmful.
| 4. What are the applications of radioactivity in medicine? | |
Ans. Radioactivity has several applications in medicine. It is used in diagnostic techniques such as X-rays, CT scans, and nuclear medicine scans to visualize internal structures and detect diseases. It is also used in radiation therapy to treat cancer by targeting and destroying cancer cells.
| 5. How is radioactivity measured and what are the units used? | |
Ans. Radioactivity is measured using a unit called the becquerel (Bq), which represents one decay per second. Another commonly used unit is the curie (Ci), where 1 Ci is equal to 3.7 x 10^10 Bq. The amount of radioactive material is typically measured using a Geiger-Muller counter or a scintillation detector.
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Dec 27, 2024 Last updated |
Video Description: Radioactivity for Physics 2024 is part of Crash Course for IIT JAM Physics preparation.
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