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If the mass of the electron (9xx10^(-31)...

If the mass of the electron `(9xx10^(-31)` kg) is taken as unit of mass, the radius of the first Bohr orbit `(0.5xx10^(-10)`m) as unit of length and 500 newton as the unit of force, then the unit of time in the new system would be

A

`3 xx 10^(-22)s`

B

`15 xx 10^(-12) g`

C

`15 xx 10^(-20)s`

D

`45 xx 10^(-20)s`

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The correct Answer is:
A
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AAKASH SERIES-APPENDICES (REVISION EXERCISE)-LAW OF MOTION
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