The length of a telescope is 36 cm . The focal lengths of its lenses can be
Consider the following statements about a microscope and a telescope 1. Both the eyepiece and the objective of a microscope are convex lenses. 2. The focal length of the objective of a telescope is lerger than the focal length of its eyepiece. 3. The magnification of a telescope increases with the increases in focal length of its objective. 4. The magnification of a microscope increases with the increases in focal length of its objective. Which of the statements given above are correct?
When a telescope is in normal adjusment, the distance of the objective from the eyepiece is found to 100 cm . If the magnifying power of the telescope, at normal adjusment, is 24 focal lengths of the lenses are
The focal length of the objective of a microscope is-
The focal length of the objective lens of a telescope is 50 cm If the magnification of the telescope is 25, then the focal length of the eye-piece is
The length of an astronomical telescope is 40 cm. The focal lengths of its lenses will be
why should objective of a telescope have larger focal length ?
The length of the tube of a microscope is 10 cm . The focal lengths of the objective and eye lenses are 0.5 cm and 1.0 cm . The magnifying power of the microscope is about
