A) Both the changes show in 'A? and 'B' are irreversible
B) Both the changes 'A' and 'B' are reversible
C) 'A' is reversible but 'B' is irreversible
D) 'A' is irreversible but 'B' is reversible
Correct Answer: B
Solution :
Both are reversible. We can get back paper sheet from the ship shaped toy of paper and the lightening bulb can also be changed to its original position by switching off the current.
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