অপবর্তন ও অপবর্তন গ্রেটিং

In a diffraction grating there are 6000 lines per cm. If light of wavelength 5896A˚5896Å is passed through it what is diffraction angle for second maxima?

In 1m, there are =6000×100=6000\times100 lines per m d=16000×100=1.667×106m ;λ=5896×1010m ;θ=?\therefore d=\frac{1}{6000\times100}=1.667\times{10}^{-6}m\ ;\lambda=5896\times{10}^{-10}m\ ;\theta=?

Here, dsinθ=2λsinθ=2×5896×10101.667×106θ=45.03od\sin{\theta}=2\lambda\Rightarrow\sin{\theta}=\frac{2\times5896\times{10}^{-10}}{1.667\times{10}^{-6}}\Rightarrow\theta=45.03^o

অপবর্তন ও অপবর্তন গ্রেটিং টপিকের ওপরে পরীক্ষা দাও