![Fyscope 2pcs H16x Huygens Lens Optical Eyepiece For Biological Microscope 23.2mm - Microscopes - AliExpress Fyscope 2pcs H16x Huygens Lens Optical Eyepiece For Biological Microscope 23.2mm - Microscopes - AliExpress](https://ae01.alicdn.com/kf/S661e17ff65854a84823dbc3d83b4d5e0K/FYSCOPE-2pcs-H16X-Huygens-Lens-Optical-Eyepiece-for-Biological-Microscope-23-2mm.jpg_Q90.jpg_.webp)
Fyscope 2pcs H16x Huygens Lens Optical Eyepiece For Biological Microscope 23.2mm - Microscopes - AliExpress
![In huygens' eyepiece,A. The cross wires are outside eyepieceB. Condition for achromatism is satisfied C. condition for minimum spherical aberration is not satisfiedD. the image formed by the objective is a virtual In huygens' eyepiece,A. The cross wires are outside eyepieceB. Condition for achromatism is satisfied C. condition for minimum spherical aberration is not satisfiedD. the image formed by the objective is a virtual](https://www.vedantu.com/question-sets/9ed4b38e-3492-4ed7-a99a-d33b4c47a51e3166782467773269046.png)
In huygens' eyepiece,A. The cross wires are outside eyepieceB. Condition for achromatism is satisfied C. condition for minimum spherical aberration is not satisfiedD. the image formed by the objective is a virtual
![Christiaan Huygens received letter from Gutschoven about how to grind small lenses | Lens on Leeuwenhoek Christiaan Huygens received letter from Gutschoven about how to grind small lenses | Lens on Leeuwenhoek](https://lensonleeuwenhoek.net/sites/default/files/gutschoven_1663_grinding-small-lenses-1.jpg)
Christiaan Huygens received letter from Gutschoven about how to grind small lenses | Lens on Leeuwenhoek
![Combination of Fermat's and Huygens' principle for finding the image... | Download Scientific Diagram Combination of Fermat's and Huygens' principle for finding the image... | Download Scientific Diagram](https://www.researchgate.net/publication/230724913/figure/fig14/AS:300359252758552@1448622634669/Combination-of-Fermats-and-Huygens-principle-for-finding-the-image-with-wavelets.png)