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A white board is placed 1 meter away from a helium neon laser. When the shutter of the laser is opened, a circular red spot
A white board is placed 1 meter away from a helium neon laser. When the shutter of the laser is opened, a circular red spot of diameter 2 mm is observed on the white board. If the white board is moved toward the laser so that it is 0.5 meter away from the laser. Choose the radius of the beam that is expected on the white board. Consider the divergence of the laser beam. O (b) 1 mm O (a) 0.5 mm O (d) 4 mm O (e) 8 mm O (c) 2 mmIn using a magnifying glass to view an object, which of the following correctly describe your observation? (a) The image is inverted and real. O (e) The image is magnified and inverted. (d) The image is noninverted and virtual. (b) The image is inverted and virtual. O (c) The image is noninverted and real.An object is placed 20 cm from a convex lens with a focal length of 10 cm, choose the following statement that correctly describes your observation. O (d) The image is inverted, virtual, and same size as the object. (b) The image is upright, virtual, and same size as the object. (e) The image is twice the size of the object. O (a) The image is upright, real, and same size as the object. (c) The image is inverted, real, and same size as the object
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