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Describe the images formed in a concave mirror and in a convex mirror?
Here is a description of image formation in a concave mirror: if the object is beyond the center of curvature (F), the image formed is real and upside down; if the object is very near to the concave mirror, the image forms behind the mirror. It is virtual, upright, and bigger in size. Here is a description of image formation in a convex mirror: a convex mirror always produces a virtual, upright, and smaller image of the object at any distance in front of it. The image is located behind the mirror.
When an object is placed near a screen why is there no image formed?
This is due to the way that light rays bend. When the image is close to the screen, the light rays reflect off the mirror and do not converge or diverge. Rather than travel perpendicular to each other, the light rays travel parallel?æto each other. This does not allow an image to form.
Give one situation where a virtual image formed?
When an image is virtual, it means the light seems to be coming from a specific source but it is not. So yes you can take a picture of it because the light is still going into the camera as if it was coming from an object. To put it another way, because we "see" a virtual image with our eyes a camera can take a picture of one. After all, a picture is just a permanent record of what is falling on the back of our eye balls.
What indicates a object near the speaker?
This one
What process occurs when an object vibrating at or near a resonant frequency of a second object causes the second object to vibrate?
resonance
Describe the images formed in a concave mirror and in a convex mirror?
Here is a description of image formation in a concave mirror: if the object is beyond the center of curvature (F), the image formed is real and upside down; if the object is very near to the concave mirror, the image forms behind the mirror. It is virtual, upright, and bigger in size. Here is a description of image formation in a convex mirror: a convex mirror always produces a virtual, upright, and smaller image of the object at any distance in front of it. The image is located behind the mirror.
When an object is placed near a screen why is there no image formed?
This is due to the way that light rays bend. When the image is close to the screen, the light rays reflect off the mirror and do not converge or diverge. Rather than travel perpendicular to each other, the light rays travel parallel?æto each other. This does not allow an image to form.
Give one situation where a virtual image formed?
When an image is virtual, it means the light seems to be coming from a specific source but it is not. So yes you can take a picture of it because the light is still going into the camera as if it was coming from an object. To put it another way, because we "see" a virtual image with our eyes a camera can take a picture of one. After all, a picture is just a permanent record of what is falling on the back of our eye balls.
When the image of a distant object is brought into focus in front a a persons retina the defect is called?
The image of a distant object is brought into focus in front of a person's retina, the defect is called nearsightedness. A virtual image produced by a lens is always located in front of the lens.
How is light reflected off of a concave mirror?
The way light is reflected is different in a concave mirror depending on the position and distance from the object. when light hits the concave mirror when it is near the object, the rays are scattered and it forms a virtual image, i.e it does not come on the screen. the image will be erect and higly magnified. When it is taken further from the object, the image becomes inverted and real, i.e it can be seen on a screen, and will still be magnified.
Why concave lens is the lens could correct the image formed of a nearsighted person?
Human eye is optical miracle.Depending on the distance of the object, we have to change the position of the screen.In case of human eye, screen (Retina) is kept at fixed distance and eye lens is elastic and it becomes more or less thin or thick, so as to adjust image on retina. This phenomena is called accommodation. In near sighted persons lens is more convex than it should be. So we put concave lens in front of eye, so that image of distant object should fall on retina. Human brain is also miracle and after few days, it starts guessing the actual distance of the object.
What lens makes light refract and spread out?
LensesThe phenomenon of refraction of light has found usage in many devices. Lenses are the most popular ones. Especially, cylindrical lenses. Cylindrical lens is a piece of transparent material where the lines representing the surfaces are arcs of circles or one is arc of circle and the other is flat. The line passing through the center of the lens and on which the centers of the two spheres are located is called the axis of lens. The point on this axis at which incident parallel rays focus or converge is the principal focus F. The distance of the principal focus from the center of the lens is known as the focal length, f.Figure 15 F - principal focusf - focal lengthThe ray parallel to the axis is bent by the lens so as to pass through the principal focus. It follows from the reversibility of light paths that the ray that passes through the focal point must travel parallel to the axis after it has passed through the lens.Figure 16 Reversibility of light paths, rays sent from the principal focustravel parallel to the axis after they have passed through the lens.Images formed by lensesLenses form real and virtual images. Real images are formed when the object is located farther than the principal focal point. The real image can be made visible by placing a screen on one side of the lens and the object on the other. Real images are always upside down. If the object is far from the lens then the image is close to the lens and is smaller than the object, if the object is located near the lens then the image is formed far from the lens and is bigger than the object.Figure 17 The real image of candle is formed on the screen. Its size depends on the distance of the object from the lens.Figure 18 The real image, upside down, smaller than the object.Figure 19 The real image, upside down, of original size.Figure 20 The real image, upside down, bigger than the object.Virtual images are formed when the object is placed between the principal focal and the lens. You can see it by looking straight at the lens.Figure 21 The virtual image, straight, bigger than the object.
Is seeing a live turkey near your house a good luck omen Turkeys are rarely seen?
Is seeing a turkey near your house good luck
Scientist believe that the more distant galaxies are formed when?
Far or near, all galaxies were thought to be formed in the first half billion years of the formation of the universe ... that is, about 13 billion years ago. Note that we're seeing the distant ones in a younger stage of development.
Why door handles are not put near hinges?
[object Object]
Is near a preposition or an adverb?
It can be either. If the object is named, it is a preposition (near the wall). If there is no object, it just means "nearby" or "close." (Near can also be an adjective.)
How do objects appear when they are viewed throungh a microscope?
The object seems to us like we are seeing with our naked eyes and it is in front of us but it is near to objective lens which has high magnification power through which it made the size of object very big than real one.
