If we had no lens in our eyes, the light entering our eye would not be focused onto the retina, causing blurred vision. The lens plays a vital role in adjusting the focus of incoming light to create a clear image on the retina.
No, the optical center of a lens is always located within the lens itself. It is the point from which light rays appear to converge and is used as a reference point for optical calculations.
The power of a lens depends on the differences in the refractive indices of the environment and the lens material. A glass lens immersed in water will loose power (a positive lens will focus at a greater distance). (This is for normal glass with refractive index greater than water - there could be glasses with refractive index less than water in which case the lens would gain power)
1. The lens could break the slide or slip 2. The lens could make contact with a fluid on the slide, and suck the fluid up around the edges of the lens. It could even damage the lens. In any case, it would take a lot of bucks to have the microscope repaired.
The total magnification of a microscope is calculated by multiplying the power of the objective lens by the power of the eyepiece lens. Given a total magnification of 200x and an eyepiece lens power of 10x, the power of the objective lens would be 200x/10x = 20x.
When the lens is cut vertically then the focal length of the lens will increase.the focal length will become approx double.
Battle of Lens happened on 1648-08-20.
You would use a convex lens.
Then the person wouldn't be able to see very well.
You would use a convex lens.
No, the optical center of a lens is always located within the lens itself. It is the point from which light rays appear to converge and is used as a reference point for optical calculations.
convex lens
The power of a lens depends on the differences in the refractive indices of the environment and the lens material. A glass lens immersed in water will loose power (a positive lens will focus at a greater distance). (This is for normal glass with refractive index greater than water - there could be glasses with refractive index less than water in which case the lens would gain power)
i would rather use a convex lens
Concave lens would diverge the rays.
1. The lens could break the slide or slip 2. The lens could make contact with a fluid on the slide, and suck the fluid up around the edges of the lens. It could even damage the lens. In any case, it would take a lot of bucks to have the microscope repaired.
The total magnification of a microscope is calculated by multiplying the power of the objective lens by the power of the eyepiece lens. Given a total magnification of 200x and an eyepiece lens power of 10x, the power of the objective lens would be 200x/10x = 20x.
A 30 times lens would magnify an object by 30 times its original size when viewed through the lens.