A screen is separated from a double slit source by 1.2 m. The distance between the two slits is 0.03mm. The second order bright fringe (m = 2) is measured to be 4.5 cm from the centerline. Prove that: 12) the wavelength of the light is equal to 563 nm, and 13) the distance between adjacent bright fringes is 2.25 cm.

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1. A screen is separated from a double slit source by 1.2 m. The distance between the two slits is 0.03mm. The second order bright fringe (m = 2) is measured to be 4.5 cm from the centerline. Prove that: 12) the wavelength of the light is equal to 563 nm, and 13) the distance between adjacent bright fringes is 2.25 cm.

2.. A converging lens having focus length of f = 5 cm. A real object’s distance from the lens is three times of the focus length. 9) construct the imaging formation diagram (ray diagram), 10) Determine the location of the image, 11) What is the magnification of the image? 

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