Question

what is the difference between concave and convex lenses?​

Answer 1

DIFFERENCE BETWEEN CONCAVE LENSES AND CONVEX LENSES :-

• 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 hypermetropia (farsightedness), whereas, concave lens is used to correct myopia (nearsightedness).

Answer 2

${\huge {\underline {\mathbb {ANSWER}}}}$

●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)