When light is shone through a double slit, a pattern of bright and dark bands, fringes are visible on a screen. Using your knowledge of light properties, explain why this pattern occurs.
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When light is shone through a double slit, a pattern of bright and dark bands, fringes are visible on a screen. Using your knowledge of light properties, explain why this pattern occurs.
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- Consider a two-slit experiment in which the slit separation is 2.4 x 10-5 m and the interference pattern is observed on a screen that is 1.50 m away from the slits. The wavelength of light passing through the slits is 420 nm. What is the position of the second dark fringe? Show your calculationsPlease give an example thin film interference problem with air, oil, and water.Calculate the wavelength of light in a double slit experiment if the 3rd bright fringe is located 1.6 cm away from the centre of the screen positioned 10 m away from two slits 1 mm apart. Provide your answer in nanometers (nm).
- please helpWhat would you observe if you made the slit separation very very large (assuming you still had a coherent source that could still pass through both slits). Comment on how this is different from the single slit experiment.A student acquired a thin filter that transmits only half the incoming intensity, and he puts this filter in front of one of the slits in a double-slit experiment. What will happen to the fringes on the screen? The answer is that bright fringes become darker and dark fringes become brighter. Please explain why, in a way that someone who knows little physics would understand. Thank you!
- In a Young's double slit experiment the wavelength of light is ?λ, separation between the slits is ?a and the distance to the screen is ?D. Give an expression for the interference fringe width ?w on screen if ?≫?D≫a. For Greek letters such as ?λ use the text equivalent - e.g. "lambda" (without the quotes, e.f. for ??Dλ use D*lambda).Explain the interaction of light with thin films, including the conditions for constructive and destructive interference.