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MHT CET20225 Aug 2022Evening ShiftPhysicsRay OpticsActual

In a compound microscope, let ' u₀ ' and ' v₀ ' be the object distance and image distance respectively. The objective of focal length ' f₀ ' magnifies a tiny object into a real, inverted image. The linear magnification of the objective is

Options

  1. Af₀+u₀ u₀ f₀
  2. Bf₀ f₀+u₀
  3. Cu₀ u₀ f₀+1
  4. Du₀ f₀ f₀+u₀

Correct answer

B. f₀ f₀+u₀

Step-by-step solution

Using lens formula: 1 v - 1 u = 1 f And definition of magnification, m= v u Multiply lens formula with u , ( u v )-1= u f ( 1 m )-1= u f m= f (u+f)

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