A spherical, polished metallic ball is used as a diverging mirror (f = -20 cm) over a birdbath. A bird, 25 cm tall, standing 50 cm away, looks directly at the mirror. What are the size and position of the bird's image?
Answers
Explanation:
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 | 15th Feb, 2015, 08:57: AM
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 | 11th Dec, 2017, 06:39: PM
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