30 



LIGHT 



through 90 degrees. Through how many degrees did 

 the spot of light move? Make a drawing to show how 

 the light came from the sun and was reflected from the 

 mirror. 



b. Fasten the mirror to the block of wood by means 

 of the rubber bands, and place it on a board. Stick a 



pin two inches in front of the mirror and place the rule 

 so that its end touches the mirror and the pin comes at 

 the two inch mark. Look in the mirror and tell how far 

 back of the mirror the image of the pin is. Place the pin 

 at different distances and repeat. Having made several 

 trials, and having obtained the same results in each trial, 

 you can now draw your conclusions. How far back of 

 the mirror is the image compared with the distance the 

 object is in front of the mirror? 



