Question

State two differences between a convex and a concave lens.​

Answer 1

Answer:

Convex lens is thicker in the middle while concave lens is thinner in the middle. A convex lens converges the light rays falling on it, while a concave lens diverges the light rays falling on it.

Explanation:

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Answer 2

Answer:

⚫ Convex lens has a thick middle part and thinner ends whereas in concave lens has a thin middle part and thicker ends .

⚫ In convex lens after refraction, light rays meet at one point whereas in concave lens after refraction, light rays move away from one another.

⚫ The image formed in convex lens can be real,virtual enlarged or diminished base upon the position of object whereas the image formed in concave lens is always virtual and diminished .

⚫In convex lens focal length is positive whereas in concave lens focal length is negative.

⚫Convex lens is used to correct hyperopia (farsightedness) whereas concave lens is used to correct myopia (nearsightedness)

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Explanation: