In Class 10 Science Chapter 10 Light, the phenomena of reflection and refraction of light, Schemes and Mind Maps of Physics

Download In Class 10 Science Chapter 10 Light, the phenomena of reflection and refraction of light and more Schemes and Mind Maps Physics in PDF only on Docsity! : a a es Reflection Bouncing back of light into the same medium. Laws of Reflection M Incident ray, reflected ray and the normal at the point of incidence, all lie in the same plane. M Zi=Zr Refraction Bending of light as it passes from one medium into another. Laws of Refraction @ Incident ray, refracted ray and the normal at the point of incidence all lie in the same plane. sini w—e Sint = Constant (Snell's law) > s aC ca @ In regular reflection parallel beam of light remains parallel after reflection. @ It occurs on the smooth surfaces like mirror @ Image is formed. © The incident rays are reflected parallel in one direction. Incident rays Reflected rays M In irregular reflection, the parallel beam of light does not remain parallel after reflection. It occurs on the rough surfaces like stone, wood. No image formation takes place. @ The incident rays are reflected abruptly in many directions.  4 Plane Mirror & Nature of image @ Virtual and Erect & The image formed by a plane mirror is of same size, laterally inverted and is at the same distance behind the mirror as the object is in front of it. M Its reflecting surface is curved inwards. “ Nature of image ¢ Virtual and Erect ¢ Real and Inverted M Its reflecting surface is curved outwards. M Nature of image ¢ Virtual and Erect At infinity Tat At the iociad Highly Real and diminished} inverted At infin Beyond ¢ ‘Between F land C Real and aR RTGS RT PPI ERT Bending of Light Ray Rarer to Denser Medium Denser to Rarer Medium Light ray bends towards the normal. Light ray bends away from the normal. ee Effects of Refraction ge oo | Pencil appears to be bent Bottom of beaker appears to be raised position Actual eersyieCe) a] Rectangular glass slab Zi=Ze Incident ray displaced parallel to itself. ie Se oo Convex Lens Concave Lens @ Its spherical surfaces Its spherical surfaces . are bulging outwards. ¢ are curved inwards. yi @ Nature of image @ Nature of image + Virtual and Erect Virtual and Erect . @Realandinverted —) ' ) ae At infinity |At focus F,|Highly | Realand At infinity | At focus F,| Highly Virtual diminished inverted diminished] and erect or or —— point-sized) Beyond 2F | Between F,|Diminished| Real and “Between | Between Diminished! Virtual and 2F, inverted infinity _| focus F, and erect At 2F, At 2F, Same size | Realand = and and inverted : : optical | optical Between F,|Beyond 2F,|Enlarged | Real and and 2F, ’ 2 uanaohas centreO jcentreO At focus F,/Atinfinity Infinitely | Real and large or inverted highly L enlarged Between /jOn the Enlarged | Virtual and focusF, |same side erect and opticall of lens as centre 0 j @ Power of a Lens : It is the ability of a lens @ Power and Focal Length of Combination to converge or diverge the rays of light. It of Lenses depends on focal length. PeP, +P, +P, +... $ Power of lens (P) = + Deel cls Scr Its SI unit is Dioptre (D)