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InterviewSolution
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Sir please explain concave or convex lense |
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Answer» Concave lens:1) It has both surfaces curving inwards.2) It is thicker at edges and thinner at middle.3) It diverges the light coming towards it.4) Its focal length is negative.5) It always produces a virtual image.Convex lens:1) It has both surfaces curving outwards.2) It is thicker at middle and thinner at the edges.3) It converges the light coming towards it.4) Its focal length is positive.5) It always produces a real image and forms a virtual image only when the object is between the focus and optical centre. The lens which disperses the light rays around, that hits the lenses, are called a concave lens. In the convex lens, the curve is outward facing, whereas, in the concave lens, the curve faces inward. When the light rays pass through the convex lens, it converges the light rays and focuses on one poin \tMeaningConvex lens refers to the lens which merges the light rays at a particular point, that travels through it.Concave lens can be identified as the lens which disperses the light rays around, that hits the lenses.Figure\t Concave lens:1) It has both surfaces curving inwards.2) It is thicker at edges and thinner at middle.3) It diverges the light coming towards it.4) Its focal length is negative.5) It always produces a virtual image.Convex lens:1) It has both surfaces curving outwards.2) It is thicker at middle and thinner at the edges.3) It converges the light coming towards it.4) Its focal length is positive.5) It always produces a real image and forms a virtual image only when the object is between the focus and optical centre. A\xa0concave lens\xa0is thinner in the middle and thicker at the edges. A\xa0convex lens\xa0is thicker in the middle and thinner at the edges. Also known as. It is also known as Diverging\xa0Lens. It is also known as\xa0Converging Lens. |
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