What is a lens and its types?

What is a lens and its types?

ℹ️ A lens is a piece of transparent material that is shaped to bend light rays in a specific way as they pass through it, whether that means causing the rays to converge to or diverge from a specific point. 

The word “lens” derives from the Latin word “lentil,” owing to the shape similarities between a converging lens and a legume. 

The 2️⃣ types of lenses are: 

📍concave lenses with following features 

🔎The light is spread out by a diverging lens. 

🔎Thinner in the centre than at the edges. 

🔎The image is on one side of the lens, while the object is on the other. 

🔎The focal length is positive. 

🔎The image will be erect, virtual, and diminished.

and 

📍convex lenses with following features 

🔍The refracted rays are converged by a converging lens. 

🔍Thicker in the centre than at the edges. 

🔍The object and the image are both on the same side of the lens. 

🔍The focal length is negative.

🔍The resultant image will be both real and inverted.

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