Table of Contents
Introduction
An optical instrument, often known as an “optic,” is a device that analyzes light waves or photons to either enhance or analyze and determine the qualities of an image for viewing. Examples include periscopes, microscopes, telescopes, and cameras.
A brief outline
The use of optical tools, such as a magnifying lens or a more complex device like a microscope or telescope, amplifies objects and allows humans to see clearly. Diverging lenses always produce smaller images, whereas convergent lenses always produce larger images.
Important concepts
Keep in mind that if an object is at a longer distance, the picture will be decreased and will be considerably closer to the focus point when using a converging lens. The image grows beyond the focal point as the object proceeds to move in the direction of the lens. The image and the object become the same size when the item is placed at 2F or twice the focal distance from the lens. When an item advances from 2F to F, its picture expands and moves out of the lens until it reaches infinity. When the item reaches F, the image advances from negative infinity to positive infinity in the direction of the lens, becoming smaller as the object advances the lens.
Optical Instrument Applications:
Numerous Lenses: Many types of equipment, such as telescopes and microscopes, create images using multiple lenses.
Microscope: A microscope is a device with two converging lenses. This is due to the fact that using two lenses rather than just one allows for better magnification.
Significance of Hc Verma Solutions Class 11 Chapter 19 Optical instruments in IIT JEE exam
For the IIT JEE exam, and also reference purposes, and competitive test preparation, the chapter on optics is vital. The exam questions in this chapter are both numerical and definitional in nature. According to the chapter-by-chapter weighting allocation for the IIT JEE test, optical instrumentation has been asked around 6.66 percent of the total questions in the past eight years’ question papers.
FAQs
What is the optical instrument in your eye, according to Class 11 Physics Chapter 19?
The initial component of the system is the eye, which is a simple optical device. The cornea and the crystalline lens are the only two positive lenses that project images into the retina to begin the visual process.
According to the HC Verma Book of Class 11 Physics, which lens is employed as an optical instrument?
Optical instruments are built on the foundation of optics. Reflection and refraction of light, as well as the generation of images, are aided by mirrors and lenses. Lenses are useful for magnifying the picture of a small object or shrinking the size of a large or massive object.
As per the HC Verma Book of Class 11 Physics, what is an important part of an optical instrument?
Optical instruments are devices that improve image clarity by using light waves. Using optical equipment like a magnifying lens or a more advanced device like a microscope or telescope magnifies items and allows us to see them in considerable detail.
