A A Biconvex Lens Has Refractive Index 1 5 And A Radius Of Curvature Of 2 5cm Two Such Lens Is Placed Lcm Apart What 1 (31.11 KiB) Viewed 31 times
please help for part b and part c, thank you so much
(a) A biconvex lens has refractive index 1.5 and a radius of curvature of 2.5cm. Two such lens is placed lcm apart. What is the focal length of the combined system? (b) An object initially at 10 m moves to 50 cm in front of a lens. In the process, its image distance doubles. Determine the focal length of the lens. (c) A biconvex thin lens, located 127 cm from a screen, projects onto it an image 5.80 times the size of the luminous object. Determine the focal length of the lens.
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