light 6th
G1 : luminous object: Sun, firefly non luminous objects : stone ,chair G4.a => 1. plane mirror forms a virtual image. 2. the image is formed as far behind the mirror as the object is in front of it. 3. The size of image is equal to that of the object. G4.b. 1. A real image is obtained. 2. The size of the image obtained is comparatively smaller than the actual object. 3. The image is inverted. G7 Plane mirrors are used .. 1.as looking glass. 2. for constructing periscope which is used in submarines. 3. in solar cookers H1 sources of light can be classified into 4 types 1. natural sources 2. man made sources 3. hot sources 4. cold sources 1.natural sources : sources which gives us light and are formed by the nature example- SUN,LIGHTNING 2.man made sources : light sources which are made by human beings example- BULB, LED 3. hot sources : sources of light which becomes hot and then Emit light Example: Sun Bulb 4. cold sources: sources that Emit light with their temperature not going