Ask a New Question

A concave lens or focal

1) A convex lens with a focal lenght of 4.0cm is placed 20.0cm from a concave lens with a focal lenght of 5.0cm. Find the
1. 2 answers
2. asked by Anonymous
3. 1,301 views
Because a concave lens cannot form a real image of a real object, it is difficult to measure its focal length precisely. One
1. 0 answers
2. asked by Ted
3. 1,307 views
A simple camera telephoto lens consists of two lenses. The objective lens has a focal length f1 = +41.7 cm. Precisely 36.1 cm
1. 1 answer
2. asked by Rudi
3. 787 views
A simple camera telephoto lens consists of two lenses. The objective lens has a focal length f1 = +41.7 cm. Precisely 36.1 cm
1. 0 answers
2. asked by Rudi
3. 1,178 views
A simple camera telephoto lens consists of two lenses. The objective lens has a focal length f1 = +41.7 cm. Precisely 36.1 cm
1. 0 answers
2. asked by Rudi
3. 985 views
You have a converging (convex) lens and a diverging (concave) lens and the magnitude of the focal length of each lens is 38.5
1. 1 answer
2. asked by Drew
3. 1,581 views
A bi-convex lens with the focal length of 25 cm and a meniscus concave lens with the focal length of 10 cm, separated from each
1. 0 answers
2. asked by Me
3. 271 views
A concave lens or focal lens 10cm produce an erect image 40cm from the lens .Determine the object distance and magnification.
1. 0 answers
2. asked by samuel
3. 555 views
A concave lens is used to help people with myopia to see better. If an object is placed 30mm from the lens and produces a
1. 1 answer
2. 147 views
3) Find out the Focal length for the following lenses (in all cases, the lens is made of a glass with index of 1.5):a) Bi-convex
1. 0 answers
2. asked by Me
3. 276 views