Which of the following statements is true about an eye that is farsighted? Question 17 options: The image is in front of the retina, and this can be corrected by a converging lens. The image is in back of the retina, and this can be corrected by a converging lens.
Ray Optics
Optics is the study of light in the field of physics. It refers to the study and properties of light. Optical phenomena can be classified into three categories: ray optics, wave optics, and quantum optics. Geometrical optics, also known as ray optics, is an optics model that explains light propagation using rays. In an optical device, a ray is a direction along which light energy is transmitted from one point to another. Geometric optics assumes that waves (rays) move in straight lines before they reach a surface. When a ray collides with a surface, it can bounce back (reflect) or bend (refract), but it continues in a straight line. The laws of reflection and refraction are the fundamental laws of geometrical optics. Light is an electromagnetic wave with a wavelength that falls within the visible spectrum.
Converging Lens
Converging lens, also known as a convex lens, is thinner at the upper and lower edges and thicker at the center. The edges are curved outwards. This lens can converge a beam of parallel rays of light that is coming from outside and focus it on a point on the other side of the lens.
Plano-Convex Lens
To understand the topic well we will first break down the name of the topic, ‘Plano Convex lens’ into three separate words and look at them individually.
Lateral Magnification
In very simple terms, the same object can be viewed in enlarged versions of itself, which we call magnification. To rephrase, magnification is the ability to enlarge the image of an object without physically altering its dimensions and structure. This process is mainly done to get an even more detailed view of the object by scaling up the image. A lot of daily life examples for this can be the use of magnifying glasses, projectors, and microscopes in laboratories. This plays a vital role in the fields of research and development and to some extent even our daily lives; our daily activity of magnifying images and texts on our mobile screen for a better look is nothing other than magnification.
Which of the following statements is true about an eye that is farsighted?
Question 17 options:
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The image is in front of the retina, and this can be corrected by a converging lens.
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The image is in back of the retina, and this can be corrected by a converging lens.
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Explanation:
Farsightedness, also known as hyperopia, is a common refractive error of the eye where the person has difficulty seeing objects up close, but can see distant objects clearly. This occurs because the eye is either too short or the cornea has too little curvature, causing light to focus behind the retina instead of directly on it.
A converging lens can be used to correct farsightedness because it bends the light rays in a way that helps to focus the image directly onto the retina. The lens works by converging, or bending inward, the light rays that enter the eye. This helps to focus the light onto the retina and produce a clear image.
In summary, farsightedness is caused by the eye being unable to focus light directly onto the retina, and a converging lens can be used to correct this by bending the light rays and focusing them directly onto the retina.
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