0
Infinity.because the distance of object from mirror"p" and the distance from image to mirror"q" are equal,so by using formula
1/f=1/p+1/q
we can find the answer
as the image of plane mirror is virtual,so"q" is taken negative,so putting values
1/f=1/p-1/p(bcz p=q)
1/f=0
f=1/0
and any thing divided by zero is infinity.
hope this helps
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How can a rough value of the focal length of a concave mirror be obtained?
One way to estimate the focal length of a concave mirror is to use the mirror formula: 1/f = 1/do + 1/di, where f is the focal length, do is the object distance, and di is the image distance. By measuring the object distance and the corresponding image distance, you can calculate an approximate value for the focal length of the concave mirror.
What is Focal length of a concave mirror?
It is the point , on the central axis, where light, that is parallel to the central axis, passes thru after it is reflected from the mirror. It is also at a distance from the mirror equal to twice the radius of curvature of the mirror.
How You place a flower 18 feet from a concave mirror. The mirror generates a virtual image of the flower that appears to be behind the mirror. What can you infer about the focal point of the mirror?
Since the image is virtual and appears behind the mirror, the focal point of the concave mirror is also located behind the mirror. This indicates that the focal point is a positive value, based on the mirror's characteristics.
How can a rough value of the focal length of a convex lens be obtained?
Focus the rays of the sun, or a distance light to the smallest point that you can get. The distance from that image to the centre of the lens is the focal length.With the the sun's rays, make sure they are focused onto something which is not flammable. If using another light source, try one that is as far away as possible.
How can you find focal length of a converging lens?
To find the approximate value of the focal length of a convex lens, let us do an experiment. Place a convex some distance away from a light source. At the opposite side of the lens, place a white paper. Now adjust the position of the lens till a sharp point of light on the white paper is obtained. Measure the distance between the lens and the white paper. This gives the value of the focal leng
How can a rough value of the focal length of a concave mirror be obtained?
One way to estimate the focal length of a concave mirror is to use the mirror formula: 1/f = 1/do + 1/di, where f is the focal length, do is the object distance, and di is the image distance. By measuring the object distance and the corresponding image distance, you can calculate an approximate value for the focal length of the concave mirror.
What is Focal length of a concave mirror?
It is the point , on the central axis, where light, that is parallel to the central axis, passes thru after it is reflected from the mirror. It is also at a distance from the mirror equal to twice the radius of curvature of the mirror.
What is a calibrated focal length?
A calibrated focal length is an adjusted value of the equivalent focal length on a camera, so as to equalize the positive and negative values of distortion over a field.
How You place a flower 18 feet from a concave mirror. The mirror generates a virtual image of the flower that appears to be behind the mirror. What can you infer about the focal point of the mirror?
Since the image is virtual and appears behind the mirror, the focal point of the concave mirror is also located behind the mirror. This indicates that the focal point is a positive value, based on the mirror's characteristics.
A convex mirror has a focal length of -11 cm a light bulb with a diameter of 5.5 cm is placed 60.0 cm from the mirror what is its Diameter?
You have to use your math is this question. First you have to put in all your number in the math equation once you get your value divide that by the diameter of the light bulb to the diameter of the actual object.
How you calculate the magnification of a telephoto lens?
Step 1 Write down the maximum focal length of the lens for which you want to find the magnification. For instance, a 70-250 mm lens will have a maximum focal length of 250mm. A prime lens will have only one value listed, and this value should be considered the maximum focal length. Step 2 Multiply this value by 1.6 if you are attaching the lens to a digital camera. Most digital cameras have a 1.6x "crop factor", which means that the outside edges of a scene will be cropped because they do not physically fit on the sensor, making the effective focal length 1.6 times greater than it would be on a film camera. For a 250mm lens, the effective focal length would be 400 (250 times 1.6). Step 3 Divide the effective focal length by 100. An easier way to do this is to move the decimal point two spaces to the left. The effective focal length of a 250mm lens on a digital camera is 400mm, so divide 400 by 100 to arrive at four. Step 4 Multiply this value by two to find the magnification of the lens in terms of viewfinder magnification used in binoculars or telescopes. So a 250mm lens would have an 8x magnification (400 divided by 100 multiplied by two) on a digital camera.
What is varifocal?
A varifocal lens is a non-fixed focal length lens where the focus changes with focal length. This is in contrast to true zoom lenses, which retain correct focus throughout their focal length range. True zooms have a constant maximum aperture at all focal lengths (as in a 28-70mm f/2.8 lens), while varifocals have maximum apertures that increase (in number, but decrease is size!) as the focal length increases (as in a 28-70mm f/3.5-5.6 lens, which has a maximum aperture of f/3.5 at 28mm, that becomes smaller in size as the focal length increases until it reaches a value of f/5.6 at 70mm). Varifocals are easier to design and build than true zooms which explains their ubiquity in the camera market. Note that they are commonly, but erroneously, referred to as zoom lenses by users and manufacturers alike.
How can you find the value of an Olympia beer Mirror?
Value of Olympia beer mirror?
How can a rough value of the focal length of a convex lens be obtained?
Focus the rays of the sun, or a distance light to the smallest point that you can get. The distance from that image to the centre of the lens is the focal length.With the the sun's rays, make sure they are focused onto something which is not flammable. If using another light source, try one that is as far away as possible.
What does "mm" mean in photography and how does it affect the quality of images?
"mm" in photography refers to millimeters, which is a measurement of the focal length of a camera lens. The focal length affects the field of view and magnification of the image. A higher mm value results in a narrower field of view and greater magnification, while a lower mm value provides a wider field of view. This can impact the composition and perspective of the image, as well as the overall quality and sharpness of the photo.
What is the curvature of a mirror What is its value for plane mirror?
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How do I calculate the f stop of a fixed power spotting scope using only the objective lens diameter and the magnification of the device?
We don't think you can do it with that information. 'f-stop' = (focal length of the objective lens) divided by (its diameter) Magnification of the scope = (focal length of the objective) divided by (focal length of the eyepiece) Looks like in order to calculate the 'f-stop', you need to estimate or measure the focal length of either the objective or the eyepiece. Here's an idea: If you can temporarily separate the objective from the tube, use the objective to focus an image of the sun on the sidewalk. (Not on anything flammable.) Measure the distance from the lens to the sharpest image. With the 'object' at infinity, the image is at the focal length.
