what should be the range of position of the object in order to get a virtual image by the above type of lens(–0.5) whose focal length is 6 cm
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A lens produce a magnifinication of -0.5 is this a converging or diverging lens?if the focal length of the lens is 6 cm. Draw a ray diagram.
(ii)A girl was playing a beam of light from a laser toarch by directing it from different directions on convex lens held vertically . She was surprised to see that in a particular direction the beam of light continue to move along the same direction after passing through the lens. State the reason for her observation draw a ray diagram for support your answer.
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