NEET (UG) entrance exam Question Bank Solutions

A convex lens of short focal length held very close to the eye, to observe minute objects clearly is called as ______.

A compound microscope has magnifying power as 32 and magnifying power of eye-piece is 4, then the magnifying power of objective is ______.

In a compound microscope, the focal lengths of two lenses are 1.5 cm and 6.25 cm an object is placed at 2 cm from objective and the final image is formed at 25 cm from eye lens. The distance between the two lenses is ______.

How should people wearing spectacles work with a microscope?

Myopia is due to ______.

The angular resolution of a 10 cm diameter telescope at a wavelength of 5000 Å is of the order of ______.

A telescope of objective lens diameter 2 m uses light of wavelength 5000 Å for viewing stars. The minimum angular separation between two stars whose image is just resolved by their telescope is ______.

When astronomical telescope is adjusted for normal adjustment, the final image is formed at ______.

In telescope power of an objective and eye lens are respectively + 1.25 D and - 20 D, then for relaxed vision the length and magnification will be ______.

A lens of large focal length and large aperture is best suited as an objective of an astronomical telescope since ______.

A lens of large focal length and large aperture is best suited as an objective of an astronomical telescope since ______