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D Question 26 7.5 pts The eye focuses by: O moving the lens. O moving both the lens and the retina. O changing the index
D Question 26 7.5 pts The eye focuses by: O moving the lens. O moving both the lens and the retina. O changing the index of refraction of the vitreous fluid. O moving the retina. O changing the focal length of the lens. Previous NextD Question 27 7.5 pts If the momentum of a particle is doubled, what happens to its de Broglie wavelength? O It becomes slightly less than half. O It doubles. O It halves. O It slightly more than doubles. It decreases by a factor of 2-1/2.D Question 28 7.5 pts The position vs. time of a mass oscillating on a spring without damping is shown in the graph. At the time labeled to, which of the following statements is true? x A -A The velocity is zero the acceleration is maximum. The velocity is negative the acceleration is zero. The velocity is positive the acceleration is maximum. The velocity is positive the acceleration is zero
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