A subatomic particle has a -1 relative unit charge and the ratio of charge to mass is 1.758820×1011Ckg–1. Find the absolute mass of the sub-atomic particle in kg.
A
6.4×10−31kg
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B
9.1×10−31kg
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C
9.1×10−30kg
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D
3.8×10−31kg
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Solution
The correct option is B9.1×10−31kg em=1.758820×1011Ckg–1