An object is located 31.6 cm to the leftof a converging lens whose focal length

Question

An object is located 31.6 cm to the leftof a converging lens whose focal length is 47.1 cm. (a) Draw a ray diagram to scale and from itdetermine the image distance and the magnification image distance _________ cm magnification___________
(b) Use the thin-lens and magnification equations to verify youranswers to part (a). image distance ____________ cm magnification _______________ (a) Draw a ray diagram to scale and from itdetermine the image distance and the magnification image distance _________ cm magnification___________
(b) Use the thin-lens and magnification equations to verify youranswers to part (a). image distance ____________ cm magnification _______________

Explanation / Answer

Thin Lens formula: 1/v - 1/ u = 1/f; Sign, d is +ve along theincident ray Given, u = -31.6 cm; f = +47.1 cm            v= u.f/(u+f)   = ... = -96.0 cm Magnification,            m= -v/u = 96.0/31.6 = 3.04 Pl draw adiagra to scale, with the object at 41.6 cm from thelens on the left side, F arked at 47.1 cm on the left and right sides. The image isfored erect, magnified & virtual on the same side )left). asthe object. Pl draw adiagra to scale, with the object at 41.6 cm from thelens on the left side, F arked at 47.1 cm on the left and right sides. The image isfored erect, magnified & virtual on the same side )left). asthe object.

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