Chapter 1: Problem 89
Which wave length of light is used in an optical microscope? (a) radio wave (b) \(\mathrm{X}\) - ray (c) infrared (d) visible
Chapter 1: Problem 89
Which wave length of light is used in an optical microscope? (a) radio wave (b) \(\mathrm{X}\) - ray (c) infrared (d) visible
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Get started for freeThe force \(F\) is represented by equation \(F=P \ell+Q \ell^{-1}\), where \(\ell\) is the length. The unit of \(P\) is same as that of $\ldots \ldots \ldots \ldots \ldots$ (a) Surface tension (b) velocity (c) force (d) momentum
The area of a rectangle of size \(1.25 \times 2.245 \mathrm{~cm}\) in significant figure is ......... (a) \(2.80625 \mathrm{~cm}^{2}\) (b) \(2.81 \mathrm{~cm}^{2}\) (c) \(2.806 \mathrm{~cm}^{2}\) (d) \(2.8062 \mathrm{~cm}^{2}\)
Write the unit of surface tension in SI system. (a) \(\left(\mathrm{N} / \mathrm{m}^{2}\right)\) (b) \((\mathrm{N} / \mathrm{m})\) (c) \(\left[\right.\) (dyne) \(\left./\left(\mathrm{cm}^{2}\right)\right]\) (d) \([(\) dyne \() /(\mathrm{cm})]\)
The period of oscillation of a simple pendulum is given by $\mathrm{T}=2 \pi \sqrt{(} \ell / \mathrm{g})$ what is the equation of the relative error \(\Delta \mathrm{T} / \mathrm{T}\) in measurement of period \(\mathrm{T}\) ? (a) \((1 / 2)(\Delta \ell / \ell)\) (b) \(2(\Delta \ell / \ell)\) (c) \((1 / 4)(\Delta \ell / \ell)\) (d) \(4(\Delta \ell / \ell)\)
Which physical quantity has dimensional formula as \(\mathrm{CR}\) where \(\mathrm{C}\) - capacitance and \(\mathrm{R}\) - Resistance? (a) Frequency (b) current (c) Time period (d) acceleration
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