Created by StemPy LabIn a double-slit experiment, each slit has width and the distance between the centres of the slits is . The light is monochromatic. On the screen, the interference fringes lie inside the broad central maximum of the single-slit diffraction pattern. How many bright interference fringes lie inside this central maximum?
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← A small object stands 30 cm in front of a thin convex lens of focal length 20 cm. A plane mirror is placed 50 cm behind the lens, perpendicular to its axis, as shown in the figure. Light from the object passes through the lens, reflects from the mirror, and passes back through the lens. The final image isA radium-226 nucleus at rest decays into a radon-222 nucleus and an alpha particle. The total energy released, which appears as the kinetic energy of the two particles, is 4.87 MeV. Taking the masses in proportion to the mass numbers, the kinetic energy of the alpha particle is closest to →
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