Megaphone.
Megaphone works on the principle of multiple reflection of sound.
What is multiple reflection with example?
The best example of multiple reflection is KALEIDOSCOPE . In a kaleidoscope, beautiful patterns are formed due to multiple reflections. Multiple reflections are used in PERISCOPE. Periscopes are used in submarines, war tanks and by solders in bunkers to see objects that are not visible directly.
Which of the following works on the principle of multiple reflections?
Kaleidoscopes work on the principle of multiple reflections.
The mirrors reflect the images of objects inside, creating a symmetrical pattern.
Which of the following is not based on multiple reflection of sound?
Hydrophone does not work on the principle of multiple reflections.
How multiple reflections are formed?
When two mirrors are parallel to each other, the number of reflections is infinite. Placing one mirror at a slight angle causes the reflections to curve. Using more than two mirrors increases the number of reflections, but what you see depends on where you stand.
Is Periscope based on multiple reflection?
The light comes in through the higher window falling and reflecting from the top mirror and falling on the bottom mirror. From the bottom mirror light is reflected to the observer and the observer is able to see object which is in front of top mirror window. Q3. Which of the following make use of multiple reflections?
Which instrument works on multiple reflection?
kaleidoscope and periscope are the instrument based on multiple reflection of light.
Which device works on principle of multiple reflection of light from plane mirror?
A kaleidoscope is an optical instrument with two or more reflecting surfaces tilted to each other in an angle, so that one or more (parts of) objects on one end of the mirrors are seen as a regular symmetrical pattern when viewed from the other end, due to repeated reflection.
Which device works on the principle of reflection of light?
Solar cooker works on the principle of reflection… > This can be explained as, light falling on its concave surface get converged on the stores food in order to cook it.
Does gramophone work on multiple reflection of sound?
Gramophone does not work on the principle of multiple reflection of sound. Devices like megaphone, bulb horn, stethoscope and soundboards work on the principle of multiple reflection of sound.
Which of the following devices do not use the phenomenon of reflection of sound waves?
The final answer is option (B) Hydrophone.
Which of the following is an example of reflection of sound?
Reflection of sound is used in many devices. For example; megaphone, loudspeaker, bulb horn, stethoscope, hearing aid, sound board etc.
Why do multiple reflections occur?
If you have one flat mirror, light from the object will reflect off the mirror once and leave the system. When you have more than one mirror, you can create multiple reflections. These multiple reflections can lead to multiple images.
What is multiple reflection of image?
Multiple reflection of light is the reflection of light back and forth through reflecting surfaces several times. When the reflection of a reflected light ray on another object is mirrored again, it is called multiple reflections.
What is multiple reflection describe a phenomenon activity based on multiple reflection?
When light reflects off a mirror, one image appears. Two mirrors placed exactly face to face give the appearance of an infinite number of images along a straight line. The multiple images seen between two mirrors that sit at an angle to each other lie over a circle.
Where do we see multiple reflection?
Multiple reflections are used in periscopes. Periscopes are used in submarines, war tanks and by solders in bunkers to see objects that are not visible directly. In a barber’s shop, we see the back of the head using multiple reflections of two mirrors.
How many reflections are there in periscope?
A periscope includes two mirrors or reflecting prisms to change the direction of the light coming from the scene observed: the first deflects it down through a vertical tube, the second diverts it horizontally so that the scene can be viewed conveniently.
What do you mean by multiple reflection class 8?
Multiple reflection of light is the reflection of light back and forth several times between the two reflecting surfaces.
What is multiple reflection of light?
Multiple reflection of light is the reflection of light back and forth several times between reflecting surfaces. If a reflected light ray is reflected again on being incident on another surface, it is termed multiple reflections. Multiple reflections are used in periscopes.
How many plane mirrors are used in kaleidoscope?
three plane mirror strips
There are three plane mirror strips in kaleidoscope . they are inclined at 60? to one another forming a hollow prism. It is based on the principle of multiple reflections.
What is the type of image formed by plane mirror?
A plane mirror forms the image of an object by reflecting the light rays coming from the object. The image formed by a plane mirror is virtual, erect and of the same size as that of the object, such that the object and its image appear to be equidistant from the mirror.