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  • If the distance between the first maxima and fifth minima of a double slit pattern (YDSE) is 7 cm and the slits are separated by <img alt="15\; \mu m" src="https://entrancecorner.oncodecogs.co

If the distance between the first maxima and fifth minima of a double slit pattern (YDSE) is 7 cm and the slits are separated by 15\; \mu m with the screen 50 cm from the slits. Wavelength of light used in the experiment is

Option: 1

800\; nm


Option: 2

500\; nm


Option: 3

600\; nm

 


Option: 4

466\; nm


Answers (1)

best_answer

Answer (3)

\frac{9\lambda D}{2d}-\frac{\lambda D}{d}=7 \times 10^{-2}

\frac{\lambda D}{d} \times \frac{7}{2}=7 \times 10^{-2}

\frac{\lambda \times 50 \times 10^{-2}}{30 \times 10^{-6}}=1 \times 10^{-2}

\lambda =\frac{3 \times 10^{-6}}{5}

\lambda =6 \times 10^{-7}

\lambda =600\; nm

Posted by

Ajit Kumar Dubey

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