Question

bending of pencil why

Answer 1

Hey user, here is your answer..........!!☺⤵⤵
,
⤵⤵⤵⤵⤵⤵⤵⤵⤵⤵⤵⤵⤵⤵⤵⤵⤵⤵⤵⤵⤵
❗❗______________________________________❗❗☺⤵


:-) , The best way of learning anything is by visualising it.So a activity has mentioned for better explanation. ⤵

,
Take the example in which you are looking down through the top surface of a glass of water, at a partly submerged pencil. Light beams reflected off the submerged part travel in a straight line to the surface of the water. But as they pass through the surface, they are bent away from the perpendicular.⤵⤵

That bending of the light fools your eye, making all the points on the submerged part of the pencil look a little closer to the surface than they actually are. And that makes the pencil look like it bends slightly where it enters the water.

The only time light rays don't bend as they leave water is when they are perpendicular to the surface. If you were to look at the pencil through the side of the glass, the light reaching your eye would be perpendicular to the side of the glass, and the pencil would look straight.

But you would probably notice that the submerged part of the pencil looked a bit fatter than the part above water. That, Davis said, is because the curvature of the glass makes it act like a magnifying lens. The curved surface causes the light rays to bend slightly outward, like the spreading of a fan, as they pass through. That widens the image of the pencil that reaches your eye.

It is the same ''magnifying lens'' phenomenon that makes things look fatter when viewed through a glass of water. In that case, the fattening effect is doubled, because the beam of light widens both when it enters the water through a curved surface and when it leaves through the other side.

⤵⤵⤵⤵⤵⤵⤵⤵⤵⤵⤵⤵⤵⤵
❗❗_________________❗❗☺