the focal length of the lens should be

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An astronomical telescope has an angular magnification of magnitude 5 for an object. The separation between the objective and the eye-piece is 36 cm. The final image is formed at infinity. The focal length f0 of the objective and fe , of the eye-piece are :
15
Nov
An astronomical telescope has an angular magnification of magnitude 5 for an object. The separation between the objective and the eye-piece is 36 cm. The final image is formed at infinity. The focal length f0 of the objective and fe , of the eye-piece are : A simple magnifying lens is used in such a [...]
Posted in: Cengage NEET by C.P Singh , Chapter 19 - Optical Instruments , Part 2 ,
Tags: A simple magnifying lens is used in such a way that an image is formed at 25 cm away from the eye. In order to have 10 times magnification , the focal length of the lens should be ,
The focal length of the objective and the eye piece of a compound microscope are 2.0 cm and 3.0 cm, respectively. The distance between the objective and the eye piece is 15.0 cm. The final image formed by the eye piece is at infinity. The two lenses are thin. The distance in cm of the object and the image produced by the objective, measured from the objective lens, are respectively
15
Nov
The focal length of the objective and the eye piece of a compound microscope are 2.0 cm and 3.0 cm, respectively. The distance between the objective and the eye piece is 15.0 cm. The final image formed by the eye piece is at infinity. The two lenses are thin. The distance in cm of the [...]
Posted in: Cengage NEET by C.P Singh , Chapter 19 - Optical Instruments , Part 2 ,
Tags: A simple magnifying lens is used in such a way that an image is formed at 25 cm away from the eye. In order to have 10 times magnification , the focal length of the lens should be , The focal length of the objective and the eye piece of a compound microscope are 2.0 cm and 3.0 cm ,
A compound microscope has a magnification 30. The focal length of eyepiece is 5 cm. If the final image is formed at least distance of distinct vision (25 cm). Find the magnification produced by the objective is
15
Nov
A compound microscope has a magnification 30. The focal length of eyepiece is 5 cm. If the final image is formed at least distance of distinct vision (25 cm). Find the magnification produced by the objective is A simple magnifying lens is used in such a way that an image is formed at 25 cm [...]
Posted in: Cengage NEET by C.P Singh , Chapter 19 - Optical Instruments , Part 2 ,
Tags: A simple magnifying lens is used in such a way that an image is formed at 25 cm away from the eye. In order to have 10 times magnification , the focal length of the lens should be ,
A simple magnifying lens is used in such a way that an image is formed at 25 cm away from the eye. In order to have 10 times magnification, the focal length of the lens should be
15
Nov
A simple magnifying lens is used in such a way that an image is formed at 25 cm away from the eye. In order to have 10 times magnification, the focal length of the lens should be A simple magnifying lens is used in such a way that an image is formed at 25 cm [...]
Posted in: Cengage NEET by C.P Singh , Chapter 19 - Optical Instruments , Part 2 ,
Tags: A simple magnifying lens is used in such a way that an image is formed at 25 cm away from the eye. In order to have 10 times magnification , the focal length of the lens should be ,