One femtometer is equivalent to

  • A
    $10^{15} \, m$
  • B
    $10^{-15} \, m$
  • C
    $10^{-12} \, m$
  • D
    $10^{12} \, m$

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Lux is a unit of

$1\,g\,cm^{-3} = ....\,kg\,m^{-3}$

Plane angle and solid angle have :

Match the items in Column-$I$ with their corresponding values in Column-$II$.
Column-$I$ Column-$II$
$(1)$ Light year $(a)$ $3.08 \times 10^{16} \ m$
$(2)$ Parsec $(b)$ $9.46 \times 10^{15} \ m$
$(3)$ $1 \ AU$ $(c)$ $1.496 \times 10^{11} \ m$

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