Say true or False: There is a threshold level of radiation to occur Chromosomal aberration

Q: How many half-lives have passed if about 3% (rounded) of the original parent material is left?

A: How many half-lives have passed if about 3% (rounded) of the original parent material is left?

Q: An ancient club is found that contains 130 g of pure carbon and has an activity of 7 decays per…

A: The expression for the initial activity,

Q: Are some types of cancer more sensitive to radiation than others? If so, what makes them more…

A:

Q: Explain why TIR is crucial to OFC

A: Answer Optical fibres rely on total internal reflection for their operation. Total internal…

Q: What is the number of a nucleus?

A:

Q: A Geiger counter registers a count rate of 5,600 counts per minute from a sample of a radioisotope.…

A: The count rate is 1400 counts per minute. The initial count rate is 5600 counts per minute.…

Q: Assume that the protons in a hot ball of protons each have a kinetic energy equal to kT, where k is…

A:

Q: How X-ras work?

A: Answer:-   Solution:- X-Ray or X-Radiation is a highly penetrating radiation form from high-energy…

Q: The atomic nucleus is most often made up of

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Q: If 3.92 half-lives have occurred, what amount of radio-active material would be left if you began…

A: The radioactivity formula is  N = No12n where, No is the initial amount, n is the number of half…

Q: What is Magnus effect?

A: Magnus effect can be defined as:

Q: what happens to a nucleus if the mass number increased?

A: The mass number of any element is the sum of the total number of protons and neutrons in the…

Q: In distributing three particles in two compartments under the constraint that no compartment will…

A: When there are two compartments, and we have to distribute 3 non-identical particles with the…

Q: How much ionising radiation is needed to get infertility? Explain how will it cause you infertility?

A: Radiation therapy to the reproductive organs as well as radiation near the abdomen, pelvis, or spine…

Q: What is meant by the idea of a critical mass?

A: The least amount of a given fissile material needed to achieve a self-sustaining fission chain…

Q: What is half-life?

A: The half life is related to the radioactivity.  The time in which the number of atoms becomes half…

Q: Why can gamma rays pass through or penetrate solids?

A: Gamma rays can penetrate through solids because they are small and have a lot of energy.

Q: What happens when a gamma ray strikes living tissue?

A: Gamma rays are one of the energy waves in electromagnetic spectrum. They are high energy rays which…

Q: Why is the sensitivity of Geiger –Muller detector higher than the other  gas filled detectors?

A: The Geiger–Müller tube or G–M tube is the sensing element of the Geiger counter instrument used for…

Q: All these medical procedure make direct use of radioisotope, EXCEPT: Group of answer choices…

A: Tc 99 scan, brachytherapy and PET scan use radioisotopes directly but x ray treatment of cancer uses…

Q: How much ionising radiation is needed to get cancer? Explain how it will give you cancer?

A: Ionising radiation, such as gamma rays, X-rays and radioactive particles can cause cancer by…

Q: What could happen if there is no nucleosynthesis and nuclear fusion ? What could happen if there is…

A: In a fusion reaction, two light nuclei merge to form a single heavier nucleus.

Q: The energy release of nuclear fission is tied to the fact that the heaviest nuclei have about 0.1%…

A: It is given that the heaviest nuclei have about 0.1% more mass per nucleon that the nuclei near the…

Q: The half-life of l-137 is 8.07 days. If 25 grams are left after 40.35 days, how many grams were in…

A: The formula of the radioactivity is  where, N is the amount left, No is the initial amount, t is…

Q: If the average energy released in a fission event is 208 MeV, find the total number of fission…

A: Given, Energy per fission event, Power, Time,

Q: How does a nucleus stay packed tightly together?

A: It is known fact that like charges always repel each other and opposite charges attracts each other…

Q: What is given off by beta decay?

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Q: Why is Megavoltage therapy better to treat cancer than superficial therapy?

A: megavoltage therapy- In this therapy we use megavoltage X-rays which are produced by linear…

Q: Who invented the microwave oven in 1946 as an accidental by-product of wartime? About how many yards…

A: 1. The microwave oven was invented by Percy Lebaron Spencer. He was an American physicist and…

Q: An ancient building was known to have been built 3000 years ago. Approximately what proportion of…

A: Given that                  The age of the ancient building is (T) =  3000year                  The…

Q: What are Alpha Particles?

A: Alpha particles are positively charged particles .

Q: What happens when gamma radiations are passed through a magnetic field?

A: Gamma particles will not get affected by the electric field, because, it is charge-less particles.

Q: Why is radiation therapy used in treating cancer, when it can also cause cancer?

A: Radiation causes cancer but the effect of radiation on a patient of cancer is different. Radiation…

Q: rCK 15 tat nd s allowe oSc Mate on q rretionless Surace I CCla System anc Mer total e velocify a5s…

A: (a) The total energy of the system is,

Q: On which factors does effects of ionizing radiation depends?

A: Introduction: The ionizing radiation is an electromagnetic wave that has sufficient energy to ionize…

Q: Ic=Beta *IB, when BJT operates in Active region. O Saturation region. O Cut off region. O all of the…

A:

Q: What can a  cell do which has a damaged ability to repair DNA, which could have been induced by…

A: In mammalian cells, the XPA protein (and perhaps at the same time XPC) initiates repair by…

Q: What is threshold effect?

A: Threshold effect is the phenomena in which after certain value of that characteristics of that…

Q: If 1.99 half-lives have occurred, what amount of radio-active material would be left if you began…

A:

Half Life

The concept of Half Life has numerous practical applications some of them includes figuring out the effective drug dosage to finding out when a radioactive becomes safe to use. If you look for a career in Nuclear Physics you will need this concept.