Which of the following is true of both nuclear fusion and nuclear fission? a. they both require a high energy input. b. they both occur without byproducts. c. they both have a high energy output. d. they both involve large atoms breaking into smaller atoms. select the best answer from the choices provided

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Nuclear fission : In this process a heavy unstable nuclei will convert into smaller stable nuclei in order to attain stability

So here we got the large energy during this process

While in this process we do not require any energy to start this reaction

Nuclear fusion : In this process two unstable small nuclei combine and form a stable nuclei and during this combination large energy is released

In this process the reaction occurs only when we give some energy to start the reaction

So correct option is

c. They both have a high energy output.

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