1.what do you mean by Earth-light?
2. A ray of light strikes a a plane mirror at a glancing angle 30 degree.
a) what is the the angle of incidence?
b) draw the path of the reflected ray in the diagram and label incident ray,reflected ray,normal,angle of incidence and angle of reflection.
3.without changing the incident ray,if the mirror is turned through an angle of 5°,how much will the reflected ray turn?
4.A metre stick dropped a shadow of length 0.80 m in the sun.At the same time, a tree dropped a shadow 7.2m long.What is the height of the tree?
2. A ray of light strikes a a plane mirror at a glancing angle 30 degree.
a) what is the the angle of incidence?
b) draw the path of the reflected ray in the diagram and label incident ray,reflected ray,normal,angle of incidence and angle of reflection.
3.without changing the incident ray,if the mirror is turned through an angle of 5°,how much will the reflected ray turn?
4.A metre stick dropped a shadow of length 0.80 m in the sun.At the same time, a tree dropped a shadow 7.2m long.What is the height of the tree?
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