Concave and Convex Lens
What is a Lens?
A lens is a transparent object (made of glass or plastic) that bends light to form images.
1. Convex Lens :
Shape:
Thick in the middle
Thin at the edges
What it does:
Brings light rays together (converges light)
Uses:
Magnifying glass
Spectacles for long-sighted people
Camera and microscope
Image formed:
Can be bigger or smaller
Can be real or virtual
Example:
A magnifying glass is a convex lens.
2. Concave Lens :
Shape:
Thin in the middle
Thick at the edges
What it does:
Spreads light rays apart (diverges light)
Uses:
Spectacles for short-sighted people
Door viewers (peepholes)
Image formed:
Always small and virtual
Example:
Glasses worn by people who cannot see far clearly.
Difference Between Convex and Concave Lens
Convex LensConcave LensThick in middleThin in middleConverges lightDiverges lightCan make images biggerMakes images smallerUsed in magnifying glassUsed in spectacles
Fun Fact :
Your eye lens is a convex lens!






Ima, it would be easier for the reader to understand the post better if you mention what “converge light” is, and in the last paragraph “difference between convex and concave lens” you forgot to add space in between words, please fix it. It’s a nice post.