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Match the units in Column-$A$ with their equivalent values in Column-$B$ and select the correct option:
Column-$A$ Column-$B$
$1$. Femtometer $(P)$. $10^{-3} \ \mu m$
$2$. Picometer $(Q)$. $10^{-3} \ mm$
$3$. Nanometer $(R)$. $10^{-3} \ pm$
$4$. Micrometer $(S)$. $10^{-3} \ cm$
$(W)$. $10^{-3} \ nm$

Observe the following:
$I) 0.0063$
$II) 132.00$
$III) 1004$
The number of significant figures in $I, II$ and $III$ is respectively:

The candela is the luminous intensity,in a given direction,of a source that emits monochromatic radiation of frequency '$A$' $\times 10^{12}$ hertz and that has a radiant intensity in that direction of $\frac{1}{B}$ watt per steradian. '$A$' and '$B$' are respectively

Convert the concentration $0.05 \, M$ into $mol \, cm^{-3}$.

What is the $SI$ unit of luminous intensity?

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