One astronomical unit is a distance equal to ...... $m$
A$9.46 \times 10^{15}$
B$1.496 \times 10^{11}$
C$3 \times 10^8$
D$3.08 \times 10^{16}$
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B$1.496 \times 10^{11}$
b (b)
One astronomical unit is the average distance between earth and sun
$1 \text { astronomical unit }( AU )=1.496 \times 10^{11} \,m$
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In a vernier callipers, $10$ divisions of vernier scale coincides with $9$ divisions of main scale, the least count of which is $0.1\,cm$. If in the measurement of inner diameter of cylinder zero of vernier scale lies between $1.3\,cm$ and $1.4\, \ cm$ of main scale and $2^{nd}$ division of vernier scale coincides with main scale division then diameter will be $.......... cm$
In terms of resistance $R$ and time $T$, the dimensions of ratio $\frac{\mu } {\varepsilon }$ of the permeability $\mu $ and permittivity $\varepsilon $ is