A microscope has an objective of focal length 2 cm, eyepiece of focal length 4 cm and the tube length of 40 cm. If the distance of distinct vision of eye is 25 cm, the magnification in the microscope is
Microscope and astronomical telescope
Every question from past board papers on Microscope and astronomical telescope, newest paper first. Open any question for its full worked answer.
NEET UG 2025 question paper (official, booklet 45)
Full paper →NEET UG 2024 question paper (official, booklet S6)
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A small telescope has an objective of focal length 140 cm and an eye piece of focal length 5.0 cm. The magnifying power of telescope for viewing a distant object is:
NEET UG 2021 question paper (official, booklet M4)
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A lens of large focal length and large aperture is best suited as an objective of an astronomical telescope since :
NEET UG 2020 question paper (official, booklet E1)
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Assume that light of wavelength 600 nm is coming from a star. The limit of resolution of telescope whose objective has a diameter of 2 m is :
NEET UG 2018 question paper (official, booklet EE)
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An astronomical refracting telescope will have large angular magnification and high angular resolution, when it has an objective lens of
NEET UG 2017 question paper (official, booklet B)
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The ratio of resolving powers of an optical microscope for two wavelengths \(\lambda_1\) = 4000 \(\mathrm{\AA}\) and \(\lambda_2\) = 6000 \(\mathrm{\AA}\) is :
NEET UG 2016 Phase 1 question paper (official, booklet A)
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A astronomical telescope has objective and eyepiece of focal lengths 40 cm and 4 cm respectively. To view an object 200 cm away from the objective, the lenses must be separated by a distance :