With reference to radioisotope thermoelectric generators (RTGs), consider the following statements: 1. RTGs are miniature fission reactors. 2. RTGs are used for powering the onboard systems of spacecrafts. 3. RTGs can use Plutonium-238, which is a by-product of weapons development. Which of the statements given above are correct?

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UPSC Question: With reference to radioisotope thermoelectric generators (RT...

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?