A convex spherical surface of radius 10 cm is used to form the image of a point object as shown. What should be the object distance x so that the distance between object and the image is 1 m ?

Question

G1 Physics · Accepted Answer

Derived solution: Step 1: For paraxial refraction at a spherical surface use n₂/v - n₁/u = (n₂ - n₁)/R, applying the Cartesian sign convention at each surface. Step 2: Test each statement independently using these relations and the data/figure. Step 3: The statements that satisfy the required optical conditions are A: 40 cm; B: 50 cm. Hence the correct answer is A,B.