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Do thick concave lenses have longer or shorter focal lengths than thin concave lenses?
It have a shorter focal length because there is more time for the light rays to come together
Lenses are engineered to have specific focal lengths Besides the curvature of the two sides of a lens what determines the focal length?
The material that the lens is made from.
Do thick convex lenses have longer or shorter focal lengths than thin convex lenses?
As a thicker lens has more material to do bend the light further it it would have a shorter focal length
Why do convex lenses have shorter focal lengths than thin convex lenses?
The convex lenses are converging lens so when the curvature of the lens increases the focal length will decrease which helps when looking up close. A thin convex lens is for seeing things from a distant.
How the focal length of a convex lens changes as the sides of the lens become less curved?
Longer focal lengths and less light rays are being bent. :) It's in the book.
Do thick concave lenses have longer or shorter focal lengths than thin concave lenses?
It have a shorter focal length because there is more time for the light rays to come together
Lenses are engineered to have specific focal lengths Besides the curvature of the two sides of a lens what determines the focal length?
The material that the lens is made from.
How do you find the power of lenses using focal lengths?
Power (F)= 1/focal length (f) focal length f, is measured in meters the power, F, is in dioptres (D) In converging or convex lenses the power is positive In diverging or concave lenses, the power is negative :)
Do thick convex lenses have longer or shorter focal lengths than thin convex lenses?
As a thicker lens has more material to do bend the light further it it would have a shorter focal length
What type of lenses are used when photographing people's faces from a distance?
You would ask for a telephoto lens in a shop. Scientifically they are convex lenses with longer focal lengths than a normal lens. A normal lens has a focal length between 21 and 35 mm, whereas the medium telephoto lenses used for portraiture have focal lengths between 70 and 135 mm.
Are SLR and DSLR lenses interchangeable?
No, they are incompatible because they are of different focal lengths. Some companies sell converters.
What are some ways using convex and concave lenses to form an image that is smaller than the object?
For forming a smaller image than the object using convex and concave lenses, you can place the object closer to the convex lens than its focal length, then position a concave lens closer to the convex lens than the sum of their focal lengths. This arrangement will produce a smaller inverted image. Adjustments can be made by changing the distances between the lenses to fine-tune the size and position of the image.
Why do convex lenses have shorter focal lengths than thin convex lenses?
The convex lenses are converging lens so when the curvature of the lens increases the focal length will decrease which helps when looking up close. A thin convex lens is for seeing things from a distant.
Do camera lenses typically have very long focal points?
We're going to assume that you mean "focal lengths".Camera lenses don't typically have very long focal lengths. The lenses with verylong focal lengths are the ones you see that look like a big tapered piece of pipesticking out on the front of the camera. Those are the extreme 'telephoto' lenses ...designed to blow up magnify (sorry) small objects in the distance. It's nearly impossibleto hand-hold the camera steady enough with such a lens, and you almost always seethem used with the camera mounted on a tripod for stability.Here's a somewhat-related fascinating and useful factoid:One focal length on the film = one radian (57.3 degrees) in the scene
How the focal length of a convex lens changes as the sides of the lens become less curved?
Longer focal lengths and less light rays are being bent. :) It's in the book.
What is the length of a telescope in normal adjustment?
At normal adjustment, the distance between the two lenses is equal to the sum of the focal lengths of each lens.
Do cameras typically have very long focal points?
We're going to assume that you mean "focal lengths".Camera lenses don't typically have very long focal lengths. The lenses with verylong focal lengths are the ones you see that look like a big tapered piece of pipesticking out on the front of the camera. Those are the extreme 'telephoto' lenses ...designed to blow up magnify (sorry) small objects in the distance. It's nearly impossibleto hand-hold the camera steady enough with such a lens, and you almost always seethem used with the camera mounted on a tripod for stability.Here's a somewhat-related fascinating and useful factoid:One focal length on the film = one radian (57.3 degrees) in the scene
