Question

013 How many images of an object will be formed when the object is placed between two plane mirrors which
are inclined at the following
angles to one another angle
.
1.∆120°
2.∆90°




pls pls pls answer with thir formula pls pls



it is from class 8th ncert book science ch -16



pls answer
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pls pls
pls​

Answer 1

Answer:

infinite

as when 2 mirrors are parallel to each other the image will be made infinetly many times.

Answer 2

Question:- How many images of an object will be formed when the object is placed between two plane mirrors which are inclined at the following angles to one another angle

.

1.∆120°

2.∆90°⤵

Answer:-⤵

The formula to calculate the no. of images of an object placed between 2 plane mirrors – (360/θ) − 1; where theta is the angle of inclination. a- 2 (360/120) – 1 = 3 – 1 = 2 b- 7 (360/45) – 1 = 8 – 1 = 7 c- 1 (360/180) – 1 = 2 – 1 = 1 d- 5 (360/60) – 1 = 6 – 1 = 5 e- 3 (360/90) – 1 = 4 – 1 =