Images in lenses

• How lenses work?

  By refraction of light
• What happen to light as it passed through lenses?

  It will bend and as a result it will change direction
• Why do object appears big or small?

  Because the light appear as if it comes closer or farther than it actually is
• What is lenses made of?

  Transparent plastic or glass
• What is concave or diverging lenses 


  The thick part was on the edge and once the light passed through the lenses it will diverse in a focal point
• What is convex lenses or converging


  The thick part was on the middle. The converging light that passed through it in a particular point called focal point
• What distinguished the lenses and mirror?

  The lenses usually have 2 center of curvature
• How focus appear on lenses?

  Depends on the index of refraction
• What happen on the focus with double convex lenses with crown glass?

  The principal focus almost coincides with the the center of the curvature thus the r and f almost have same equal
• What if an object was place in infinity

  Location: at F

  Orientation: inverted

  Size: smaller

  Type: real
• Convex: What if an object is located far from 2F

  Location: between F and 2F

  Orientation: inverted

  Size: smaller

  Type: real
• Convex: What if an object is located at 2F

  Location: at 2F

  Orientation: Inverted

  Size: same

  Type: real
• Comvex: what if an object located between F and 2F

  Location: far from 2F

  Orientation: Inverted

  Size: larger

  Type: real
• Vertex: what if an object is placed on at F

  Location: at Infinity

  Orientation: none

  Size: none

  Type: none
• Comvex: what if an object is located between Vertex and F

  Location: same side of the lens as the object

  Orientation: upright

  Size:

  Type: virtual
• It is the bending of light as it passed through a medium to another

  Refraction of Light
• Convex lenses forms

  Real or Virtual
• Concave lenses forms?

  Upright and smaller