The age of a fossil can be determined with precision
Important Questions on Nuclear Physics
Which of the following is the high-frequency radiation produced in nuclear reactions and also emitted by radioactive nuclei that are used in medicine to destroy cancer cells?
To meet its rapidly growing energy demand, some opine that India should pursue research and development on thorium as the future fuel of nuclear energy. In this context, what advantage does thorium hold over uranium?
1. Thorium is far more abundant in nature than uranium.
2. On the basis of per unit mass of mined mineral, thorium can generate more energy compared to natural uranium.
3. Thorium produces less harmful waste compared to uranium.
Which of the statement(s) given above is/are correct?
Radioisotopes Uses
a. Iodine-123 :1. Leukemia
b. Cobalt -60 : 2. To trace the flow of blood
c. Sodium -24 :3. Brain imaging
d. Phosphorus-32 : 4. Treatment of Cancer
Match the following:
| Type of electromagnetic radiation | Approximate wavelength (m) |
| A. Infrared radiation | 1. 10–12 |
| B. X-rays | 2. 10–5 |
| C. UV radiation | 3. 10–10 |
| D. Gamma-rays | 4. 10–8 |
Select the correct option using the codes;
India has vast reserves of thorium. In India, thorium is extracted in which of the following forms?
The mass number of an isotope of an element is . If its nucleus has neutrons, what is its atomic number?
Which radioisotope of carbon is used in carbon dating?
Consider the following statements:
1. Near-infrared waves find application in the construction of night vision apparatuses.
2. Gamma rays are produced in high-energy nuclear explosions and supernovas.
Which of the statements given above is/ are correct?
