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11
Physics
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1.Units, Dimensions and Measurement
Difficult
In terms of resistance $R$ and time $T$, the dimensions of ratio $\frac{\mu } {\varepsilon }$ of the permeability $\mu $ and permittivity $\varepsilon $ is
[JEE MAIN 2014]
A
$\left[ {R{T^{ - 2}}} \right]$
B
$\left[ {{R^2}{T^{ - 1}}} \right]$
C
$\left[ {{R^2}} \right]$
D
$\left[ {{R^2}{T^2}} \right]$
Std 11
Physics
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