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In a microscope the objective is having focal length f_ o =2 ~cm and eye-piece is having focal length f_ e =4 ~cm . The tube length is 32 cm. The magnification produced by this microscope for normal adjustment is _ _ _ _ .

Correct answer

100

Step-by-step solution

For microscope at normal adjustment: M = L f_o D f_e where L = 32 cm, f_o = 2 cm, f_e = 4 cm, D = 25 cm M = 32 2 25 4 = 16 6.25 = 100

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