Physics
Grade-9
Easy
Question
1 Joule = ________________ Erg.
- 10000000
- 1000000
- 100000
- 10000
Hint:
1 Joule is equal to 10000000 erg.
The correct answer is: 10000000
Joule is the SI unit and erg is the CGS unit of energy. Joule is Newton-meter whereas erg is dyne-centimeter. Therefore, as 1 Newton is 100000 dyne and 1 meter is 100 cm; 1 Joule will be equal to 10000000 dyne-cm i.e. 10000000 erg.
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