A concave lens always forms a virtual image. This is because it diverges light rays, causing them to spread out. When the diverged rays are traced back, they appear to originate from a single point on the same side of ...
Category: Class 10 Science
NCERT Solutions for Class 10 Science and important questions for CBSE class 10 for session 2020-2021
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The spectacles used for a person suffering from nearsightedness (myopia) are concave lenses. Concave lenses are thinner at the center and thicker at the edges, diverging light rays entering the eye. This helps move the focal point backward onto the ...
A person suffering from farsightedness (hyperopia) has difficulty seeing nearby objects clearly. Hyperopia occurs when light entering the eye is focused behind the retina, causing nearby objects to appear blurry. This condition can often be corrected with convex lenses, which ...
The minimum distance of clear vision for a healthy eye is 25 cm. This is known as the near point of the eye, where objects can be seen clearly without strain. It allows the eye to focus on close objects ...
If a person cannot see distant objects clearly, the defect in vision is near sightedness. Near sightedness, or myopia, occurs when light entering the eye is focused in front of the retina instead of directly on it, causing distant objects ...