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how many images are formed when two plane mirrors are set at an angle of 45 degree, 60 degree, 120 ddegree and 180 degree? please give answer with proper explanation.
 how many images will be form when mirrors are at parralel?
Asked by Petulla Mishra | 15 Feb, 2015, 08:57: AM
answered-by-expert Expert Answer

The formula to find the number of images (n) formed between two plane mirrors inclined at angle, begin mathsize 12px style straight theta end style between them is as follows:

begin mathsize 14px style Number space of space images space formed space equals space fraction numerator 360 space degree over denominator straight theta end fraction space minus space 1 end style

Substituting the different values of angles between two inclined mirrors we can tabulate the answer as follows:

 

Angle between the two mirrors (begin mathsize 12px style straight theta end style)

Number of images formed (n)

45 °

7

60 °

5

120 °

2

180 °

1

0 °

Infinite

 

Answered by Yashvanti Jain | 11 Dec, 2017, 06:39: PM

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