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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.
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.
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.
How does the focal length of eye changes from a near object to far object?
When you're looking at a near object, the light rays converge at a point behind the retina so the focal length of your eye increases so that the parallel rays of light converge on the back of the retina. Therefore, if you're looking from a near object to a far object, the focal length of your eye should decrease back to its normal, relaxed size.
How sharp is the image of the far object when the near obect is being viewe and vice versa?
When focusing on a near object, the sharpness of a far object will be slightly blurred, and vice versa. This is due to the way the lens of the eye adjusts focus, creating a depth of field where only objects at a certain distance are in clear focus.
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.
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.
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.
How does the focal length of eye changes from a near object to far object?
When you're looking at a near object, the light rays converge at a point behind the retina so the focal length of your eye increases so that the parallel rays of light converge on the back of the retina. Therefore, if you're looking from a near object to a far object, the focal length of your eye should decrease back to its normal, relaxed size.
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.
How sharp is the image of the far object when the near obect is being viewe and vice versa?
When focusing on a near object, the sharpness of a far object will be slightly blurred, and vice versa. This is due to the way the lens of the eye adjusts focus, creating a depth of field where only objects at a certain distance are in clear focus.
What change occurs when human eye view an object closer than 6 metres?
When a human eye views an object closer than 6 meters, the ciliary muscles contract to increase the curvature of the lens, enabling the eye to focus on the near object. This process is called accommodation, where the lens changes shape to ensure that the image of the near object is projected sharply onto the retina.
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.
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Is seeing a turkey near your house good luck
How do images formed by a concave lens and convex mirror compare?
Images formed by a concave lens are virtual, upright, and reduced in size, while images formed by a convex mirror are virtual, upright, and smaller than the object. Both types of images result from diverging light rays.
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.
