In a double slit experiment, the distance betweenthe slits is d. The s

1.	In a double slit experiment, the distance betweenthe slits is d. The screen is at a distance D fromthe slits. If bright fringe is formed opposite to oneof the slits then its order is
Answer» The order is $\dfrac{d^2}{2\lambda\times D}$ Explanation: GIVEN that, Distance between the slits = d Distance of the screen from the slits =D We need to calculate the order Using formula of path difference $\sqrt{(D^2-d^2)}-D=n\lambda$ $D(1+\dfrac{d}{D})^{\frac{1}{2}}-D=n\lambda$ $D+\dfrac{d^2}{2D}-D=n\lambda$ $n\lambda=\dfrac{d^2}{2D}$ $n=\dfrac{d^2}{2\lambda\times D}$ Hence, The order is $\dfrac{d^2}{2\lambda\times D}$ Learn more : Topic : double SLIT experiment brainly.in/question/7560303