Reviews question for physics,mathematiçs na accounting.

http://maswayetu.blogspot.com/2015/05/mpyaangalia-hapa-review-questions.html?m=1

Mwanzilishi wa islamic state auwawa.

http://maswayetu.blogspot.com/2015/04/newsmwanzilishi-wa-is-auawa-nchini-iraq.html

Mauaji ya Garissa

Jamani hivi tumemkosea nini Mungu wetu.
Hii ni zaidi ya hatari baada ya wanafunzi wapatao 150 kuuawa katika chuo kikuu hicho jina Garissa.

KANEMBWA JKT.

Hizi ni baadhi ya picha za jkt kanembwa.

BIOLOGICAL STRUCTURES

Biological diagrams listed below are for animals and plants.

LIGHT PARTY 1. EX1

Solve the following question below.

1.(a)What is meant by the principal focus of a converging lens?

   (b)What happens to the image of an object placed between the principal focus and a converging lens? Illustrate your answer by using a ray diagram.

   (c) An object 4cm high is placed 20cm from a converging lens of focal length 8cm:
    Determine:
   (i)the distance of the image    from the lens.
   (ii)the magnification.
   (iii)the height of the image.

2.(a) (i)What is meant by the term real image of a convex lens.
    (ii)Give two differences between images formed in a plane mirror and a pin hole camera.

   (b) (i)Define the principal focus in terms of a convex lens.
         (ii)Draw a sketch diagram to show position of an object and image in a concave mirror such that the image is virtual.

   (c)An object is placed 20cm from a concave mirror of unknown focal length. A real image is formed whose height is twice the height of the object. Calculate the position of the image and focal length of the mirror.

3.(a) State briefly:
     (i) The cause of refraction of light when passing through transparent media.
     (ii) Position of image in a concave mirror, of a very distant object.
     (iii) Cause for a blurred image in a concave mirror or a convex lenses.

  (b)Explain the following:
     (i) Condition giving rise to critical angle and total internal reflection.
     (ii) Two principal in physics used to make telescope.

  (c) A telescope of 5m diameter reflector of a focal length 18m is used to focus the image of the sun . Using the distance of the sun from the earth and diameter of the sun as 1.5 ×10^11m and 1.4 ×10^9m respectively , calculate the:
   (i) Position of the image of the sun.
   (ii) Diameter of the image of the sun.