Question and Answers Forum

All Questions      Topic List

Coordinate Geometry Questions

Previous in All Question      Next in All Question      

Previous in Coordinate Geometry      Next in Coordinate Geometry      

Question Number 95341 by AshrafNejem last updated on 24/May/20

$$\mathrm{Q})\mathrm{A}\mathrm{light}\mathrm{falls}\mathrm{on}\mathrm{two}\mathrm{slits}0.15mm\mathrm{apart}.\mathrm{An}\mathrm{interference}\mathrm{pattern}$$$$\mathrm{is}\mathrm{produced}\mathrm{on}\mathrm{a}\mathrm{screen}60cm\mathrm{from}\mathrm{the}\mathrm{slits},\mathrm{if}$$$$\mathrm{the}\mathrm{distance}\mathrm{between}\mathrm{the}\mathrm{second}\mathrm{and}\mathrm{the}\mathrm{fifth}$$$$\mathrm{bright}\mathrm{bands}\left(\mathrm{frings}\right)\mathrm{is}0.7cm.\mathrm{Calculate}\mathrm{the}$$$$\mathrm{avelength}\mathrm{of}\mathrm{the}\mathrm{used}\mathrm{light}.$$$$\mathit{s}\mathit{o}\mathit{l}\mathit{u}\mathit{t}\mathit{i}\mathit{o}\mathit{n}:$$$$\mathrm{\Delta }{y}_{n=2\to \mathrm{n}=5}=0.7\Rightarrow \mathrm{\Delta }y=0.7/3=0.233\times {10}^{-2}m$$$$\mathrm{\Delta }y=\frac{s\lambda }{d}\Rightarrow \lambda =\frac{d\mathrm{\Delta }y}{s}=\frac{0.15\times {10}^{-3}\times 0.233\times {10}^{-2}}{60\times {10}^{-2}}$$$$=5.83\times {10}^{-7}=583nm$$

Terms of Service

Privacy Policy

Contact: info@tinkutara.com