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Is the image formed on the retina real or virtual
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A150 w lamp emits light of wavelength 590 nm uniformly in all directions. what is the photon flux (photons per unit area per unit time) on a small screen at a distance 2.3 m from the lamp? assume the photons are uniformly distributed over the surface of a sphere of radius 2.3 m.
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Which accurately compares concave and convex lenses?
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Suppose a wire with a current is pushed upward by a magnetic field. how would the wire move if the direction of the current reversed? explain your answer.
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Is the image formed on the retina real or virtual...
Mathematics, 03.03.2021 18:10
Mathematics, 03.03.2021 18:10