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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 | |