Economy2024
With reference to radioisotope thermoelectric generators (RTGs), consider the following statements:
- RTGs are miniature fission reactors.
- RTGs are used for powering the onboard systems of spacecrafts.
- RTGs can use Plutonium-238, which is a by-product of weapons development.
Which of the statements given above are correct?
Explanation
The correct option is 2 and 3 only because radioisotope thermoelectric generators (RTGs) use the heat released by the decay of radioactive isotopes, such as Plutonium-238, to generate electricity, and they are indeed utilized for powering onboard systems of spacecraft due to their reliability in providing long-term power in remote environments. However, statement 1 is incorrect; RTGs are not miniature fission reactors, as they do not produce energy through fission reactions but rather through radioactive decay, which is a fundamentally different process. This distinction is crucial for understanding the operational principles of RTGs in the context of space exploration.