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Chapter 1: Problem 18
What is full name of ESR ? (a) Electric space Radar (c) Electron spin Resonance (b) Electron space Range (d) Electric spin Resonance
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Equation of \(\ell_{1}=\ell_{0}\left[1+\alpha\left(\mathrm{T}_{2}-\mathrm{T}_{1}\right)\right]\) find out the dimensions of the coefficient of linear expansion \(\alpha\) suffix. (a) \(\mathrm{M}^{0} \mathrm{~L}^{0} \mathrm{~T}^{1} \mathrm{~K}^{1}\) (b) \(\mathrm{M}^{0} \mathrm{~L}^{1} \mathrm{~T}^{1} \mathrm{~K}^{1}\) (c) \(\mathrm{M}^{1} \mathrm{~L}^{1} \mathrm{~T}^{0} \mathrm{~K}^{1}\) (d) \(\mathrm{M}^{0} \mathrm{~L}^{0} \mathrm{~T}^{0} \mathrm{~K}^{-1}\)
Which physical quantity has unit of joule - second? (a) velocity (b) plank's constant (c) energy (d) viscosity
For a sphere having volume is given by \(\mathrm{V}=(4 / 3) \pi \mathrm{r}^{3}\) What is the equation of the relative error \((\Delta \mathrm{V} / \mathrm{V})\) in measurement of the volume \(\mathrm{V}\) ? (a) \(3(\Delta \mathrm{r} / \mathrm{r})\) (b) \(4(\Delta \mathrm{r} / \mathrm{r})\) (c) \((4 / 3)(\Delta \mathrm{r} / \mathrm{r})\) (d) \((1 / 3)(\Delta \mathrm{r} / \mathrm{r})\)
The radius of circle is \(1.26 \mathrm{~cm}\). According to the concept of significant figures area of it can be represented as - (a) \(4.9850 \mathrm{~cm}^{2}\) (b) \(4.985 \mathrm{~cm}^{2}\) (c) \(4.98 \mathrm{~cm}^{2}\) (d) \(9.98 \mathrm{~cm}^{2}\)
The unit of Stefen Boltzman constant \((\sigma)\) is ............ (a) \(\mathrm{w}^{2} \mathrm{~m}^{-2} \mathrm{k}^{-1}\) (b) \(\mathrm{w} \mathrm{m}^{2} \mathrm{k}^{-3}\) (c) \(\mathrm{w} \mathrm{m}^{-2} \mathrm{k}^{4}\) (d) \(\mathrm{w} \mathrm{m}^{-2} \mathrm{k}^{-4}\)
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