Tag: physics

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Multiple choice physics nuclear physics hazards and safety measures of radiations harmful effects and safety precautions for radiations energy production

Carbon dating is

  1. a process to determine the age of archaeological samples

  2. a medicine for treatment of cancer

  3. a process to determine the age of a meteorite

  4. a process of treatment of diseases in animals
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation
Carbon dating is a method for determining the age of an object containing organic material by using the properties of radiocarbon (${}^{14}C$), a radioactive isotope of carbon. 
Multiple choice physics nuclear physics hazards and safety measures of radiations harmful effects and safety precautions for radiations energy production

Match the following :

Radio isotope Cures disease
i) Radio sodium a) Thyroid gland
ii) Radio phosphorus b) Cancer
iii) Radio cobalt circulation c) Blocks in blood
iv) Radio iodine d) Leukamia

  1. i-c, ii-b, iii-a, iv-d

  2. i-a, ii-c, iii-b,iv-d

  3. i-c, ii-d, iii-b, iv-a

  4. i-d, ii-b, iii-c, iv-a
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Thyroid disease is cured using - Radio Iodine
Cancer - Radioactive Cobalt circulation (Chemo)
Blocks in blood - Radio Sodium
Leukemia - Radio Phosphorus
Hence option C is correct.

Multiple choice physics nuclear physics hazards and safety measures of radiations harmful effects and safety precautions for radiations energy production

Fill in the blank.

Radioactive contamination can enter the body through ____________.

  1. inhalation

  2. ingestion

  3. absorption 

  4. all of the above
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

D

Radioactive contamination can enter into the body through inhalation, ingestion and absorption. It causes serious biological effects to our body. Radioactive waves are capable to enter the body directly through penetration. It can also be inhaled or ingested. 

Multiple choice physics nuclear physics hazards and safety measures of radiations harmful effects and safety precautions for radiations energy production

The rad is the correct unit used to report the measurement of 

  1. the rate of decay of radioactive source

  2. the ability of a beam of gamma ray photons to produce ions in a target

  3. the energy delivered by radiation to a target.

  4. the biological effect of radiation
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Rad is the unit of absorbed dose of ionizing radiation. One rad is equal approximately to the absorbed dose delivered when soft tissue is exposed to one-roentgen of medium-voltage radiation.  Thus this is the bilogical effect of radiation. 

Multiple choice physics nuclear physics hazards and safety measures of radiations harmful effects and safety precautions for radiations energy production

Radiation exposure comes from

  1. Background Sources

  2. Manmade sources

  3. Medical processes

  4. All of the above
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Because of Man made processes , there will be radiation exposure. For example we can take bricks , it causes radiation

Because of Medical processes , we will get several radiation exposures . For example X ray radiation etc
Background sources also causes radiation
Therefore option $D$ is correct

Multiple choice physics nuclear physics hazards and safety measures of radiations harmful effects and safety precautions for radiations energy production

The effective area of a black body is 0.1 $m^2$ and its temperature is 1000 K. The amount of radiations emitted by it per min is -

  1. 1.34 k-cal

  2. 81 k-cal

  3. 5.63 k-cal

  4. 1.34 k-J.
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

$\begin{array}{l} \dfrac { { d\emptyset  } }{ { dt } } =A6T{ Y^{ 4 } } \ =81\, \, kcal \end{array}$