#1
Which particle is emitted during beta decay?
Beta particle
ExplanationElectron or positron emitted from a nucleus
#2
Which unit is commonly used to measure radiation exposure in humans?
Sievert
ExplanationMeasures the biological effects of radiation
#3
Which radioactive isotope is commonly used in carbon dating?
Carbon-14
ExplanationUsed to determine the age of organic materials
#4
What is the primary purpose of a Geiger-Muller counter?
Measure radiation dose
ExplanationDetect and measure ionizing radiation
#5
What is the primary source of radiation exposure from medical X-rays?
Gamma rays
ExplanationHigh-energy electromagnetic radiation
#6
What is the primary factor that determines the penetration ability of nuclear radiation?
Energy of the particle
ExplanationHigher energy particles penetrate more deeply
#7
Which of the following isotopes is commonly used in medical imaging?
Iodine-131
ExplanationUsed in diagnosing and treating thyroid disorders
#8
What is the primary mechanism of radiation exposure in a nuclear power plant accident?
Gamma radiation
ExplanationHigh-energy electromagnetic radiation released
#9
What is the primary source of energy in nuclear reactions within the sun?
Fusion reactions
ExplanationCombining lighter elements to form heavier ones
#10
What is the primary form of radiation emitted during nuclear fission reactions?
Gamma radiation
ExplanationElectromagnetic radiation released during fission
#11
What is the half-life of a radioactive material?
The time it takes for half of the material to decay
ExplanationTime required for half of the radioactive atoms to decay
#12
Which type of radiation is the most penetrating?
Gamma radiation
ExplanationHigh-energy electromagnetic radiation
#13
Which of the following particles has the highest ionization power?
Alpha particle
ExplanationHeaviest and most strongly ionizing particle
#14
In nuclear fission, what is the role of a moderator?
Slow down neutrons
ExplanationReduce the speed of neutrons to enhance fission
#15
Which type of radiation is most harmful when it enters the human body?
Alpha radiation
ExplanationHeaviest and most damaging when internalized