In general, it is a long, tubular device through which a person can see objects which are out of the direct line of sight. The periscope makes use
of two plane mirrors
What is periscope and its uses?
periscope, optical instrument used in
land and sea warfare, submarine navigation, and elsewhere to enable an observer to see his surroundings while remaining under cover
, behind armour, or submerged.
What is periscope principle?
A periscope works on the
principle of reflection
.
What is periscope short answer?
A periscope is
an instrument for observation over
, around or through an object, obstacle or condition that prevents direct line-of-sight observation from an observer’s current position. In its simplest form, it consists of an outer case with mirrors at each end set parallel to each other at a 45° angle.
What are the uses of periscope Class 8?
- It is used in submarines to determine the distance of a torpedo and helps in deciding the right time for the attack.
- It is used in a nuclear reactor to observe the chemical reactions that are taking place.
- In military periscopes are used to observe from their hiding position.
What is periscope in science class 8?
A periscope is
a long, tubular device through which a person can see objects that are out of the direct line of sight
. … The periscope makes use of two plane mirrors to see over the top of things. Principle. A periscope works on the reflection of light from two plane mirrors arranged parallel to one another.
Where is Kaleidoscope used?
Kaleidoscope is an optical toy consisting of two mirrors at a particular angle. Some common uses of the kaleidoscope are: Kaleidoscope produces beautiful patterns that are used by fashion designers. A kaleidoscope is
used as a toy for entertainment
.
What is the use of periscope Brainly?
A periscope is an
instrument for observation over, around or through an object, obstacle or condition that prevents direct line-of-sight observation from an observer’s current position
. In its simplest form, it consists of an outer case with mirrors at each end set parallel to each other at a 45° angle.
What is periscope kaleidoscope principle?
Kaleidoscope works on the principle of
multiple reflection of light from plane mirrors
.
What is the principle behind the working of periscope and kaleidoscope?
Kaleidoscopes work on the principle of
multiple reflections
.
The mirrors reflect the images of objects inside, creating a symmetrical pattern. When you look at your reflection in one mirror, you see light that has come from your face and bounced off the mirror.
How is periscope constructed?
Periscopes can be constructed using
a pair of flat mirrors or prisms and a rectangular hollow tube that has a viewing window at the top and bottom of the tube
. The mirrors within this structure are fixed at an angle of 45
o
at the two ends of the rectangular hollow.
Which mirror is used in periscope?
Only plane mirrors
are used for a simple periscope. An expanded view of the object is required for some distance visions, and therefore convex mirrors are helpful. An erect image is produced by a double reversal of the object. Convex mirrors can be used to view objects that are too close to each other.
How do scientists use periscope?
The mirrors are fitted into each end of the tube at an angle of exactly 45 degrees (45°) so that they face each other. In the periscope, light hits the top
mirror
at 45° and reflects away at the same angle. The light then bounces down to the bottom mirror.
How many images are seen in a periscope?
If the mirrors are positioned at a right angle,
four images
of the object can be seen. Periscope: In its simplest form, it consists of an outer case with mirrors at each end set parallel to each other at a 45° angle.
Which instrument is based on the principle of multiple reflection?
kaleidoscope and periscope
are the instrument based on multiple reflection of light.
What are the advantages of periscope?
- Increased Access to Guest Speakers. …
- Creation of Multimedia Projects. …
- Facilitating Interpersonal/Professional Relationships. …
- Expanding Educational Opportunities. …
- Decreasing Reliance on the Media Binary (TV and Video)
What is periscope write its construction and working with diagram?
Construction of Periscope. A periscope works on the principle of reflection of light from one plane mirror placed at an angle(450) parallel to other plane mirror.
Diagram shows the position of mirrors and light rays
. In the figure a and b are the positions of mirror at an angle of 450.
What is like periscope?
- Twitch.
- YouNow.
- Vimeo.
- Vimeo Livestream.
- StreamYard.
- Facebook Live.
- Restream.
- YouTube Live.
What is the use of kaleidoscope tool class 4?
As a tool for designers, the kaleidoscope produces
ranges of colors and patterns used to create rugs, stained glass, jewelry, architectural patterns, wallpaper, woven tapestries, and ideas for painters
.
What is kaleidoscope state the principle?
Kaleidoscope works on the principle of
multiple reflection of light from plane mirrors
.
What is periscope write any one use of periscope?
The periscope is used in
the submarines to see what is going on the water surface
, It was used for observation purposes in the trenches during World War I, It is used in some gun turrets and it is used in armed vehicles.
Why is prism used in periscope?
Most reliable periscopes work through prisms
because the salt water can damage the small aluminum or silver coatings of mirrors
. This causes the vision to be blurred and even slightly more green shifted than usual. This is why prisms are the best choice, especially when it comes to submarine periscopes.
What is the shape of a periscope?
FAQs about Periscope
Due to this, the beam of light, incident on the first mirror must be incident on the second mirror too after the reflection from the first one. Thus, periscopes are having
a Z shape
.
Which type of lenses are used in periscope?
Essentially it’s a tube with
two 45-degree lenses mounted
at either end of them. You look into one end and can see an image reflected from the other end. A periscope lens uses the same principle, but with just a single mirror, to bend the light 90 degrees.
What are the parts of a periscope?
Its essential parts are
a tube, prisms, lenses, mirrors, and an eyepiece
. The image is received in one mirror and reflected through the tube with its lenses to a mirror visible to the viewer.
How does a periscope form an image?
Image formation
The image developed by a plane mirror is
virtual and laterally inverted
. When a ray reflected by the 1st mirror shifts the incident ray for the 2nd one, this laterally inverted incident ray gets reflected by the 2nd mirror. … Hence, the image formed in a periscope is virtual without lateral inversion.
How are the plane mirrors arranged in a periscope?
Answer: 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.
