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Gargi
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Gargi
Asked: November 24, 20202020-11-24T10:58:36+00:00 2020-11-24T10:58:36+00:00In: Class 7 Science

State two differences between a convex and a concave lens.

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NCERT Solutions for Class 7 Science Chapter 15
Important NCERT Questions
7th Chapter 15 Light
NCERT Books for Session 2022-2023
CBSE Board and State Board
Questions No: 7

2020-2021cbsechapter 15class 7 scienceclass7lightncertscience
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    1. Harshini
      2020-11-24T11:06:07+00:00Added an answer on November 24, 2020 at 11:06 am

      • A convex lens can make images which are enlarged or smaller or equal to the size of the object whereas concave lens can always make smaller image.
      • A convex lens makes both real image and virtual images whereas a concave lens always makes a virtual image.

      https://www.tiwariacademy.com/ncert-solutions/class-7/science/chapter-15/

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    2. Harshini
      2020-11-24T11:03:44+00:00Added an answer on November 24, 2020 at 11:03 am

      Characteristics of the image formed by a plane mirror:
      • Virtual and erect.
      • Behind the mirror.
      • Size of image is equal to size of object.
      • Laterally inverted image (image of left side visible on right side).
      • Distance of image behind the mirror is equal to distance of object in front of mirror.

      https://www.tiwariacademy.com/ncert-solutions/class-7/science/chapter-15/

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    3. ashwin99
      2023-12-06T05:52:53+00:00Added an answer on December 6, 2023 at 5:52 am

      Convex and concave lenses differ in shape and light behavior. A convex lens bulges outward and converges light rays to a focal point, useful in magnifying glasses and cameras. In contrast, a concave lens curves inward, dispersing incoming light rays without focusing. It is beneficial for correcting vision problems like nearsightedness and in devices like corrective eyeglasses. Their shapes and how they handle light determine their distinct functions in various optical applications.

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