Question:
The resolving power of telescope can be increased by
The resolving power of telescope can be increased by
Updated On: Jan 18, 2023
- increasing the diameter of object
- increasing the wavelength of light used
- decreasing the diameter of objective
- decreasing the frequency of light used
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The Correct Option is A
Solution and Explanation
As we know,
the resolving power of a telescope $ = \frac {d}{1.22\lambda}$
where, $d$ is the diameter of objective. So if the diameter of objective lens of telescope is increased then the resolving power will be increase.
the resolving power of a telescope $ = \frac {d}{1.22\lambda}$
where, $d$ is the diameter of objective. So if the diameter of objective lens of telescope is increased then the resolving power will be increase.
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Concepts Used:
Optical instruments
A device that processes light waves (or photons), either to enhance an image for viewing or to analyze and determine its characteristic properties is called an optical instrument (or "optic" for short).
Applications of Optical Instruments:
- Microscope - It is one of the most extensively used optical instruments comprised of only one lens or combination of the lenses for magnifying and inspecting bodies that are too small to be seen in detail by clear eyes. Earlier microscopes had only one lens, and are, therefore, called simple microscopes, but the present microscopes are accessible with at least two lenses and thereby, termed a compound microscope.
- Telescope - It is another remarkable optical instrument. It makes distant objects emerge nearer by using an arrangement of lenses or lenses and curved mirrors that is used to observe the objects by absorption, emission, and reflection of their electromagnetic radiation to furnish a magnified image. As they are used to view objects that are far away, they include at least two lenses.