What Happens to Image Formation with Different Angles Between Plane Mirrors?

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physicolic
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As we know if the angle between two intersecting plane mirrors is 60 degrees 360/60 minus 1= 5 images of an object between the mirrors are formed. what will happen if the angle is 65 or 42,6 degrees?
 

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Do you know WHY you get that result for 60 degrees?
(Draw a picture.)
 
thank you i just understood.
 
I draw the rays of light and saw the answer. thanx
 

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