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Category: Oscillation and Waves

Question-54163

Question Number 54163 by ajfour last updated on 30/Jan/19 Commented by ajfour last updated on 30/Jan/19 $${If}\:{the}\:{pulley}\:\left({disc}\right)\:{rolls}\:{a}\:{bit}\:{to}\:{and} \\ $$$${fro}\:{about}\:{the}\:{equilibrium}\:{poition}, \\ $$$${find}\:{the}\:{time}\:{period}\:{of}\:{such}\:{small} \\ $$$${oscillations}. \\ $$…

A-sound-wave-of-velocity-350m-s-is-directed-towards-the-surface-of-the-water-If-the-ratio-of-the-wavelength-of-sound-in-air-to-that-in-water-150-ratio-475-Calculate-the-velocity-of-the-wave-in-water-

Question Number 52341 by Necxx last updated on 06/Jan/19 $${A}\:{sound}\:{wave}\:{of}\:{velocity}\:\mathrm{350}{m}/{s} \\ $$$${is}\:{directed}\:{towards}\:{the}\:{surface}\:{of} \\ $$$${the}\:{water}.\:{If}\:{the}\:{ratio}\:{of}\:{the} \\ $$$${wavelength}\:{of}\:{sound}\:{in}\:{air}\:{to}\:{that} \\ $$$${in}\:{water}\:\mathrm{150}\:{ratio}\:\mathrm{475}.{Calculate} \\ $$$${the}\:{velocity}\:{of}\:{the}\:{wave}\:{in}\:{water}. \\ $$ Terms of Service…

An-object-60cm-tall-is-placed-on-the-principal-axis-of-a-convex-lens-and-its-30cm-tall-image-is-formed-on-the-screen-placed-at-a-distance-of-40cm-from-the-object-What-is-the-focal-length-of-the-lens-

Question Number 51637 by Necxx last updated on 29/Dec/18 $${An}\:{object}\:\mathrm{60}{cm}\:{tall}\:{is}\:{placed}\:{on} \\ $$$${the}\:{principal}\:{axis}\:{of}\:{a}\:{convex}\:{lens} \\ $$$${and}\:{its}\:\mathrm{30}{cm}\:{tall}\:{image}\:{is}\:{formed} \\ $$$${on}\:{the}\:{screen}\:{placed}\:{at}\:{a}\:{distance} \\ $$$${of}\:\mathrm{40}{cm}\:{from}\:{the}\:{object}.{What}\:{is} \\ $$$${the}\:{focal}\:{length}\:{of}\:{the}\:{lens}? \\ $$ Answered by aseerimad…

Question-109470

Question Number 109470 by pticantor last updated on 24/Aug/20 Commented by pticantor last updated on 24/Aug/20 $$\boldsymbol{{please}}\:\boldsymbol{{help}}\:\boldsymbol{{me}}\:\boldsymbol{{to}}\:\boldsymbol{{show}}\:\boldsymbol{{the}} \\ $$$$\boldsymbol{{differential}}\:\boldsymbol{{equation}}\:\boldsymbol{{of}} \\ $$$$\boldsymbol{{that}}\:\boldsymbol{{systeme}}\:\boldsymbol{{please}} \\ $$ Terms of…

Prof-Kintush-has-a-near-point-of-45cm-and-his-far-point-is-infinity-What-type-of-lens-and-focal-length-should-be-recommended-for-his-normal-reading-

Question Number 41964 by Necxx last updated on 16/Aug/18 $${Prof}\:{Kintush}\:{has}\:{a}\:{near}\:{point}\:{of} \\ $$$$\mathrm{45}{cm}\:{and}\:{his}\:{far}\:{point}\:{is}\:{infinity}. \\ $$$${What}\:{type}\:{of}\:{lens}\:{and}\:{focal}\:{length} \\ $$$${should}\:{be}\:{recommended}\:{for}\:{his} \\ $$$${normal}\:{reading}? \\ $$ Commented by tanmay.chaudhury50@gmail.com last updated…