Parallel Mirrors
Trending Questions
Q.
Two plane mirrors. A and B are aligned parallel to each other, as shown in
the figure. A light ray is incident at an angle of 300 at a point just inside one
end of A. The plane of incidence coincides with the plane of the figure. The
maximum number of times the ray undergoes reflections (including the first
one) before it emerges out is
[IIT-JEE (Screening) 2002]
28
30
32
34
Q. A double slit S1 − S2 is illuminated by a coherent light of wavelength . The slits are separated by a distance d. A plane mirror is placed in front of the double slit at a distance D1 from it and a screen ∑ is placed behind the double slit at a distance D2 from it (figure 17-E2). The screen ∑ receives only the light reflected by the mirror. Find the fringe-width of the interference pattern on the screen.
Figure
Figure
Q. Two plane mirrors kept parallel to each other as shown in the diagram. A point object is placed at point A. How many images will get formed in the given situation :
![](https://s3-us-west-2.amazonaws.com/infinitestudent-images/ckeditor_assets/pictures/14262/content_1.png)
![](https://s3-us-west-2.amazonaws.com/infinitestudent-images/ckeditor_assets/pictures/14262/content_1.png)
- Two
- One
- Infinite
- No image will get formed
Q. In the figure you are in a system of two vertical parallel mirrors A and B separated by distance d. A point object is placed at point O, a distance 0.2d from mirror A. Each mirror produces a first (least deep) image of the object. Then each mirror produces a second image with the object being the first image in the opposite mirror. Then each mirror produces a third image with the object being the second image in the opposite mirror, and so on - you might see hundreds of images. How deep behind mirror A are the first, second, and third images in mirror A?
![](https://s3-us-west-2.amazonaws.com/infinitestudent-images/ckeditor_assets/pictures/13208/content_101.png)
![](https://s3-us-west-2.amazonaws.com/infinitestudent-images/ckeditor_assets/pictures/13208/content_101.png)
- 0.2d, d and 2d
- 0.2d, 1.8d and 2.2d
- 0.2d, 1.6d and 2.2d
- can′t be calculated.