Q No 4. If a QN0-3 INthat must the focal length of. 10 virtual 50 cm form Image away. aunt located 100 cm. an away (measured from That the aunt is to the right of the lens, locate I describe the erect from of an optical system diject is placed as an distance from of all leves surface = 20 cm. ..^.. water Thin des at (measured shown ime other end of the system. (Radin of currature 8 negative lens be for it The lens) of from (he lens). Given Image. a distance of So= 40cm in Fig 2. Find The Image in R = 20 cm Si=? Dr. Anwar Huban