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Chapter 1: Problem 79
Volt/meter is the unit of \(\ldots \ldots \ldots \ldots \ldots\) (a) Work (b) viscosity (c) Electric field intensity (d) velocity
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The mass of substance is \(75.5 \mathrm{gm}\) and its volume is $25 \mathrm{~cm}^{3}$. It's density up to the correct significant figure is \(\ldots \ldots \ldots \ldots \ldots\) (a) \(3.02 \mathrm{gm} / \mathrm{cm}^{3}\) (b) \(3.200 \mathrm{gm} / \mathrm{cm}^{3}\) (c) \(3.02 \mathrm{gm} / \mathrm{cm}^{3}\) (d) \(3.1 \mathrm{gm} / \mathrm{cm}^{3}\)
100 picometer \(=\ldots \ldots \ldots \ldots\) (a) \(10^{-8} \mathrm{~cm}\) (b) \(10^{-7} \mathrm{~m}\) (c) \(10 \times 10^{-6} \mu \mathrm{m}\) (d) \(10 \times 10^{-8} \mu \mathrm{m}\)
Find the distance at which 4 AU would subtend an angle of exactly 1 " of arc. $\left[1 \mathrm{AU}=1.496 \times 10^{11} \mathrm{~m}, 1^{\prime \prime}=4.85 \times 10^{-6} \mathrm{rad}\right]$ (a) \(1.123 \times 10^{5} \mathrm{~m}\) (b) \(11.23 \times 10^{5} \mathrm{~m}\) (c) \(1.123 \times 10^{17} \mathrm{~m}\) (d) \(11.23 \times 10^{17} \mathrm{~m}\)
A cube has numerically equal volume and surface area calculate the volume of such a cube. (a) 2000 Unit (b) 216 Unit (c) 2160 Unit (d) 1000 Unit
Pressure \(P=\left(a t^{2} / b x\right)\) where \(x=\) distance, \(t=\) time find the dimensional formula for \(\mathrm{a} / \mathrm{b}\) (a) \(\mathrm{M}^{1} \mathrm{~L}^{0} \mathrm{~T}^{-4}\) (b) \(\mathrm{M}^{1} \mathrm{~L}^{1} \mathrm{~T}^{-1}\) (c) \(\mathrm{M}^{1} \mathrm{~L}^{0} \mathrm{~T}^{-2}\) (d) \(\mathrm{M}^{+1} \mathrm{~L}^{0} \mathrm{~T}^{-2}\)
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