Physicseasy · Past Paper
What is the relation between 1 Joule and 1 Erg?
A1 J = 10^5 erg
B1 J = 10^7 erg
C1 J = 10^3 erg
D1 J = 10^9 erg
✓ Correct Answer: B — 1 J = 10^7 erg
1 Joule is equal to 10^7 ergs (10^5 dynes * 10^2 cm).
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