Q.

Which of the following units represents the largest amount of energy?

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a

Calorie

b

Erg

c

Joule

d

eV     

answer is A.

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Detailed Solution

 One calorie energy = 4.18 J(Joule)

One erg energy = 10-7J

One Joule energy = 1 J

One eV energy = 1.6×10-19 J

So, the largest unit of energy is Calorie.

Therefore, option A is correct.

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