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Manipal MET2012PhysicsRay Optics

Power of a lens is -4 D and for second lens, power is +2 D ; the total power of the couple is

Options

  1. A-2 D
  2. B6 D
  3. C-6 D
  4. D-8 D

Correct answer

A. -2 D

Step-by-step solution

Total power aligned & P=R₁+P₂ & P=-4 D +2 D & P=-2 D aligned

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