An astronomical telscope has an eyepiece of focal-length 5 cm. If the angular magnification in normal adjustment is 10, the distance between the objective and eyepiece in cm is

An astronomical telescope has an eyepiece of focal-length 5cm. If the angular magnification in normal adjustment is 10, when final image is at least distance of distinct vision (25cm) from eye piece, then angular magnification will be :

An astronomical telescope has an angular magnification of magnitude 5 for distant object. The separation between the objective and eyepiece is 36cm and the final image is formed at infinity. Determine the focal length of objective and eyepiece.

An astronomical telescope has an angular magnification of magnitude 5 for distant object. The separation between the objective and the eyepiece is 36 cm and the final image is formed at infinity. The focal length f_(0) of the objective and the focal length f_(0) of the eyepiece are

An astronomical telescope has a magnifying power of 10 . In normal adjustment, distance between the objective and eye piece is 22 cm calculate focal length of objective lens.

An astronomical telescope has a magnifying power of 10 . In normal adjustment, distance between the objective and eye piece is 22 cm . The focal length of objective lens is.

A microscope has an objective of focal length 1.5 cm and eye piece of focal length 2.5 cm . If the distance between objective and eyepiece is 25 cm . What is the approximate value of magnification produced for relaxed eye ?