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87.A telescope has an angular magnification of magnitude 6 for distant objects . The separation between the objective and the eyepiece is 49cm. The final image is formed at infinity. The focal length of the objective lens is

Answer» 87.A telescope has an angular magnification of magnitude 6 for distant objects . The separation between the objective and the eyepiece is 49cm. The final image is formed at infinity. The focal length of the objective lens is


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