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JEE Main202126 Feb 2021Evening ShiftPhysicsRay OpticsActual

Given below are two statements : one is labeled as Assertion A and the other is labeled as Reason R . Assertion A : For a simple microscope, the angular size of the object equals the angular size of the image. Reason R : Magnification is achieved as the small object can be kept much closer to the eye than 25 cm and hence it subtends a large angle. In the light of the above statements, choose the most appropriate answ

Options

  1. AA is false but R is true
  2. BBoth A and R are true but R is NOT the correct explanation of A
  3. CA is true but R is false
  4. DBoth A and R are true and R is the correct explanation of A

Correct answer

D. Both A and R are true and R is the correct explanation of A

Step-by-step solution

θ ' = h u 0 ;   θ ' is same for both object and image m = θ ' θ = D μ 0 u 0 < D Hence m > 1

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