Question

Which of the following statement(s) is/are correct?

• A. Conservation of mechanical energy does not consider only conservative force.
• B. Conservation of energy consider both conservative and non-conservative forces.
• C. Conservation of energy consider only conservative force.
• D. Mass converted into energy in nuclear reaction is called mass-defect.

Answer 1

Answer: (B)

In elastic collision, the conservation of mechanical energy consider only conservative force while conservation of energy consider both conservative and non-conservative force.
Mass converted into energy in nuclear reaction is called nuclear energy.
Thus, the statement given in option is correct, rest are incorrect.