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NEST2019PhysicsRay Optics

A square object of size 1 ~cm 1 ~cm consists of two dark spots which are 4 ~m apart. The object is viewed using a compound microscope of numerical aperture 0.25 with light of wavelength 500 nm . The objective lens has a focal length of 1.8 cm and the eyepiece lens has a focal length of 6 cm . The distance between the objective and eyepiece lens is 24 cm . Then,

Options

  1. Athe object has to be placed 2 cm from the objective lens so that a sharp focused image is seen by relaxed eyes
  2. BIf the objective is replaced with a lens with higher magnification, the distance between the objective and eye
  3. Cthe size of the image will appear to be approximately 9 ~cm 9 ~cm .
  4. Dthe microscope is able to resolve the two dark spots in the object.

Correct answer

D. the microscope is able to resolve the two dark spots in the object.

Step-by-step solution

No solution available.

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