Express joule in terms of erg. – InterviewSolution

1.

Express joule in terms of erg.

Answer»

Relation between joule and erg :

1 joule = 1N × 1m

But 1N = 10⁵ dyne

And 1m =100 cm = 10² cm

Hence, 1 joule = 10⁵ dyne × 10²cm

= 10⁷dyne x cm = 10⁷erg

Thus, 1 Joule = 10⁷ erg

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