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Questions  >>  JEEMAIN and NEET  >>  NEET PAST PAPERS  >>  2017
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Q)

A physical quantity of the dimensions of length that can be formed out of c, G and $\frac{e^2}{4 \pi \epsilon_0}$ is [ c is velocity of light, G is universal constant of gravitation and e is charge] ;


( A ) $\frac{1}{c^2} [G \frac{e^2}{4 \pi \epsilon_0}]^{^\frac{1}{2}}$
( B ) $\frac{1}{c^2} [ \frac{e^2}{G4 \pi \epsilon_0}]^{^\frac{1}{2}}$
( C ) $\frac{1}{c} G \frac{e^2}{4 \pi \epsilon_0}$
( D ) $c^2 [G \frac{e^2}{4 \pi \epsilon_0}]^{^\frac{1}{2}}$

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