Identify each statement as describing a convex lens a concave lens or both:
1. A lens that is thicker in the centre, thin at the edges.
2. A lens that is thicker at the edges thin at the centre.
3. Causes light rays passing through it to meet at the at a focus point.
4. Has an optical axis.
5. Causes light rays passing through it to diverge.
6. An object more than two focal lengths form the lens will have an inverted image.
7. Causes light ray passing through it to refract.
8. Used to correct nearsightedness.
9. Used to correct farsightedness.
10. Creates a focal point
Answers
ANSWER 1 = Explanation: A convex lens is thicker in the middle and thinner at the edges. A concave lens is thin in the middle and thick at the edges, so it seems to “cave” inwards. It makes light rays bend outwards, or diverge.
ANSWER 2 = A concave lens is thin in the middle and thick at the edges, so it seems to “cave” inwards. It makes light rays bend outwards, or diverge. A convex lens works in the opposite way. It is thicker in the middle and thinner at the edges.
ANSWER 3 = A convex lens is also called a converging lens because it makes parallel light rays passing through it bend inward and meet (converge) at a spot just beyond the lens known as the focal point. ... Convex lenses are used in things like telescopes and binoculars to bring distant light rays to a focus in your eyes.
ANSWER 4 = An optical axis is a line along which there is some degree of rotational symmetry in an optical system such as a camera lens or microscope.
ANSWER 5 = The bending of a ray of light also occurs when light passes into and out of a glass lens. However, because of the curved surfaces of the lens, the bending causes the light rays in a beam either to come together (converge, picture on left-hand side) or to spread out (diverge, picture on right-hand side).
ANSWER 6 = That is to say, if the object is right side up, then the image is upside down. In this case, the ... A six-foot tall person would have an image that is larger than six feet tall. ... The magnification is greater than inverted image
ANSWER 7 = Rather, these incident rays diverge upon refracting through the lens. For this reason, a double concave lens can never produce a real image.
ANSWER 8 = Correcting for Nearsightedness
Correcting for NearsightednessThe cure for the nearsighted eye is to equip it with a diverging lens. Since the nature of the problem of nearsightedness is that the light is focused in front of the retina, a diverging lens will serve to diverge light before it reaches the eye.
ANSWER 9 = Far-sightedness, also known as hypermetropia, is a condition of the eye in which light is ... lenses, eyeglasses or contact lenses. Eyeglasses used to correct far-sightedness have convex lenses.
ANSWER 10 = Any type of difference in imagery will result in that element becoming a focal point. Difference or contrast can come in many different forms. Color, value, texture, shape, and form can all create contrast. By combining elements, you can increase the contrast that is created, thus strengthening the focal point.
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1. Convex Lens.
2. Concave Lens.
3. Convex Lens.
4. Convex Lens.
5. Concave Lens.
6. Both. {Concave and Convex lens}
7. Concave Lens.
8. Concave Lens.
9. Convex Lens.
10. Both. {Concave and Convex Lens}
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