All about LENSES by X C 25 Tanushree Mandal https://padlet.com/peeceemandal/oe7o42dpooxqk7dl Notes en-us 2021-08-26 16:51:59 UTC 2024-07-27 17:57:51 UTC hello@padlet.com https://padlet.net/icons/png/1f4d1.png peeceemandal https://padlet.com/peeceemandal/oe7o42dpooxqk7dl/wish/1698878213 A transparent material bound by two surfaces of which both surfaces a spherical form a lens

]]> 2021-08-26 16:53:02 UTC https://padlet.com/peeceemandal/oe7o42dpooxqk7dl/wish/1698878213 peeceemandal https://padlet.com/peeceemandal/oe7o42dpooxqk7dl/wish/1698878822 Concave lenses are converging lenses and thick at  middle]]> 2021-08-26 16:53:23 UTC https://padlet.com/peeceemandal/oe7o42dpooxqk7dl/wish/1698878822 peeceemandal https://padlet.com/peeceemandal/oe7o42dpooxqk7dl/wish/1698879652 Concave lens is a diverging lense and thick at edge]]> 2021-08-26 16:53:46 UTC https://padlet.com/peeceemandal/oe7o42dpooxqk7dl/wish/1698879652 peeceemandal https://padlet.com/peeceemandal/oe7o42dpooxqk7dl/wish/1698880743 Centre of curvature a lens has two spherical surfaces each surface form a part of a sphere the centre of the sphere are called centre of curvature]]> 2021-08-26 16:54:17 UTC https://padlet.com/peeceemandal/oe7o42dpooxqk7dl/wish/1698880743 peeceemandal https://padlet.com/peeceemandal/oe7o42dpooxqk7dl/wish/1698887304 Optical centre the central point of a lens is called optical centre]]> 2021-08-26 16:57:16 UTC https://padlet.com/peeceemandal/oe7o42dpooxqk7dl/wish/1698887304 peeceemandal https://padlet.com/peeceemandal/oe7o42dpooxqk7dl/wish/1698888822 Aperture effective diameter of the circular outline of a spherical lens is called aperture ]]> 2021-08-26 16:57:59 UTC https://padlet.com/peeceemandal/oe7o42dpooxqk7dl/wish/1698888822 peeceemandal https://padlet.com/peeceemandal/oe7o42dpooxqk7dl/wish/1698892925 Principal focus several Ray parallel to principal Axis after refracting from the lens converge at a point is called principal axis of a convex lens

Several ray parallel to the principal Axis after refracting from the lens appeared to diverge from a point known as principal focus of a concave lens]]> 2021-08-26 16:59:56 UTC https://padlet.com/peeceemandal/oe7o42dpooxqk7dl/wish/1698892925 peeceemandal https://padlet.com/peeceemandal/oe7o42dpooxqk7dl/wish/1698895926 Principal axis and imaginary straight line passing through the centre of curvature of a lens is called its principal axis]]> 2021-08-26 17:01:40 UTC https://padlet.com/peeceemandal/oe7o42dpooxqk7dl/wish/1698895926 Rules peeceemandal https://padlet.com/peeceemandal/oe7o42dpooxqk7dl/wish/1698907566 2021-08-26 17:08:12 UTC https://padlet.com/peeceemandal/oe7o42dpooxqk7dl/wish/1698907566 Rules continued peeceemandal https://padlet.com/peeceemandal/oe7o42dpooxqk7dl/wish/1698909716 2021-08-26 17:09:11 UTC https://padlet.com/peeceemandal/oe7o42dpooxqk7dl/wish/1698909716 Convex lens diagrams peeceemandal https://padlet.com/peeceemandal/oe7o42dpooxqk7dl/wish/1698913933 2021-08-26 17:11:31 UTC https://padlet.com/peeceemandal/oe7o42dpooxqk7dl/wish/1698913933 Concave lense diagrams peeceemandal https://padlet.com/peeceemandal/oe7o42dpooxqk7dl/wish/1698920644 2021-08-26 17:14:41 UTC https://padlet.com/peeceemandal/oe7o42dpooxqk7dl/wish/1698920644 Sign convention lens formula and magnification peeceemandal https://padlet.com/peeceemandal/oe7o42dpooxqk7dl/wish/1698935591 v= image distance
u=object distance
f=focus 
M=magnification
h=height of image
h'=height of object
Formula for magnification:- M = h'/h
Power of a lens:- P=1/f]]> 2021-08-26 17:22:15 UTC https://padlet.com/peeceemandal/oe7o42dpooxqk7dl/wish/1698935591