What is a periscope in the Bible?
What is a periscope in the Bible?
A pericope (/pəˈrɪkəpiː/; Greek περικοπή, “a cutting-out”) in rhetoric is a set of verses that forms one coherent unit or thought, suitable for public reading from a text, now usually of sacred scripture. Lectionaries are normally made up of pericopes containing the Epistle and Gospel readings for the liturgical year.
Why is the image in a periscope upright?
Answer. There are two mirrors in the periscope which are situated in each of the 90° bends of the periscope’s body at an angle of 45°. Now,when the reflection is created on the first mirror a lateral inversion happens. In this way,the a non-inverted and upright image is produced by a periscope.
Is the final image formed in a periscope real?
No, the final image formed by a periscope is not real. It forms virtual image, since it is made of a plane mirror. The image formed by a plane mirror is called a virtual image because it is formed where the virtual rays appear to come from when the real rays are reflected by the mirror.
Is the image formed by a periscope upside down?
The image formed in a periscope is virtual without lateral inversion because 2 lateral inversions cancel each other. Hence, the image formed in a periscope is virtual without lateral inversion.
How are the two plane mirrors in a periscope arranged?
A) The plane mirrors in a periscope is parallel with each other which helps to reflect the light rays from the upper end of the periscope to the lower end of the periscope. The plane mirrors in a Periscope incline at 45° angle with the surface of the periscope.
How many mirrors are used in kaleidoscope?
two mirrors
Which property of plane mirror is used in Periscope?
In periscopes, plane mirrors are used to bend light so that image of an object can be brought down to a lower level. Focal length of a plane mirror is infinity and it has zero optical power. Thus, it doesn’t converge or diverge light.
What type of image is formed in a plane mirror?
virtual image
What are the uses of plane mirror in our daily life?
Uses of Plane Mirror – definition
- They are used as looking glass.
- They are used in solar cookers.
- They are also used in constructing periscope which is used in submarines.
- They are also used to make kaleidoscope, a toy which produces beautiful patterns.
- They are also used in various scientific instruments.
What are the characteristics of plane mirror?
An image formed by a plane mirror has the following characteristics:
- Virtual and erect.
- Behind the mirror.
- The size of the image is equal to the size of the object.
- Laterally inverted image (image of the left side visible on the right side).
What are two types of mirror?
Common Types of Mirrors
- Plane Mirror — These are flat mirrors that reflect images in their normal proportions, reversed from left to right.
- Concave Mirror — Concave mirrors are spherical mirrors that curve inward like a spoon.
- Convex Mirror — Convex mirrors are also spherical mirrors.
How is a plane mirror made?
The most common mirrors are flat and called plane mirrors. These mirrors are made by putting a thin layer of silver nitrate or aluminium behind a flat piece of glass. When you place an object in front of a mirror, you see an image of the same object in the mirror.
Why do we see our image in a plane mirror?
Plane mirror causes regular reflection of light. When a parallel beam of light is incident on a plane mirror it is reflected back parallely. Due to this property a plane mirror is used to see our image and not a rough surface.