A wave of wavelength $\lambda$ and frequency $f$ is incident on a barrier with a \single slit of width $a$. The barrier is placed in a medium with re\fractive index $n$. What is the intensity of the dif\fracted wave at the point $P$ on the screen, where $P$ is at a dis ance $D$ from the barrier?

Question

A wave of wavelength $\lambda$ and frequency $f$ is incident on a barrier with a \single slit of width $a$. The barrier is placed in a medium with re\fractive index $n$. What is the intensity of the dif\fracted wave at the point $P$ on the screen, where $P$ is at a dis	ance $D$ from the barrier?

Accepted Answer

\frac{I_0}{4} \left$ \frac{\sin \frac{\pi a}{\lambda}}{\frac{\pi a}{\lambda}} \right $^2

Post Utme Futa 2017 Physics Question 28

A wave of wavelength $\lambda$ and frequency $f$ is incident on a barrier with a \single slit of width $a$. The barrier is placed in a medium with re\fractive index $n$. What is the intensity of the dif\fracted wave at the point $P$ on the screen, where $P$ is at a dis\tance $D$ from the barrier?

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