From the following combinations of physical constants (expressed through their usual…

PHYSICS · Single correct · CBSE · Physics · Units and Measurements · Units and Measurements

Problem

From the following combinations of physical constants (expressed through their usual symbols) the only combination, that would have the same value in different systems of units, is: [Main Online April 12, 2014] (1) ch2πϵ02\frac{ch}{2\pi\epsilon_0^2} (2) e22πϵ0Gme2\frac{e^2}{2\pi\epsilon_0 G m_e^2} ( mem_e = mass of electron) (3) μ0ϵ0c2Ghe2\frac{\mu_0 \epsilon_0}{c^2} \frac{G}{he^2} (4) 2πμ0ϵ0ce2hG\frac{2\pi\sqrt{\mu_0 \epsilon_0}}{ce^2} \frac{h}{G}

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