Typically, two rays are sufficient to locate an image formed by a concave mirror for an object. The two common rays used are one parallel to the principal axis that passes through the focal point after reflection, and the other passing through the focal point before reflection.
2 is the minimum number of light rays required to locate the image (of a point object) formed by a lens. First find the path of rays after refraction and then their point of intersection gives the location of the image.
To locate an image, only two non-parallel rays are needed. These rays intersect at the image point, which is the point where the image is formed.
It is easier to find the focal point of a convex lens because the focal point is on the same side as the incoming light, making it more accessible to measure. In contrast, for a concave lens, the focal point is behind the lens and is virtual, making it harder to locate experimentally.
If the image produced is 4 times the size of the object and inverted, then the object is placed at a distance equal to half the radius of curvature from the mirror. This would position the object beyond the center of curvature of the concave mirror. Using an accurate scale, you would measure a distance of half the radius of curvature from the mirror to locate the object.
The focal point on a lens is typically found at the point where parallel rays of light converge after passing through the lens. One way to locate the focal point is by using a concave or convex lens to focus light rays onto a surface and then measuring the distance between the lens and the point where the light converges. Additionally, many lenses come with information about their focal length, making it easier to locate the focal point.
2 is the minimum number of light rays required to locate the image (of a point object) formed by a lens. First find the path of rays after refraction and then their point of intersection gives the location of the image.
No. A minimum of three seismometer stations are required to locate an earthquakes epicentre. Please see the related question for more information.
To locate an image, only two non-parallel rays are needed. These rays intersect at the image point, which is the point where the image is formed.
One part of a coordinate system. More than this is required.
The minimum number of seismographs needed to locate an epicenter of an earthquake is 3.
At least two, or a minimum of three.
The minimum number of seismic stations needed to determine the location of an earthquake's epicenter is THREE.
At least 3 stations are required to find the epicenter
It is easier to find the focal point of a convex lens because the focal point is on the same side as the incoming light, making it more accessible to measure. In contrast, for a concave lens, the focal point is behind the lens and is virtual, making it harder to locate experimentally.
Police can question you wherever they can locate you. You are not required to answer the questions, regardless of where the questioning occurs.
When trying to locate parts for a Honda Goldwing then it may be possible to locate the required parts from such websites as eBay, Bike Bandit or the Motorcycle Superstore.
You cannot locate someone with just their NI number in the UK (United Kingdom). If a person wants to work in the UK, they are required to have a NI number.