Single convex lenses can be used to make images of far away objects. Will these
ID: 1513736 • Letter: S
Question
Single convex lenses can be used to make images of far away objects. Will these images be real or imaginary? Where does the image occur relative to the focus? (Specify which side of the lens) Lenses in combination are used in the making of microscopes and telescopes. When observing with the human eye, should the device create real or virtual images? Why? Microscopes often have very bright lights to illuminate the object. If you were to look at the light without the microscope it appears so bright it may "hurt" to look at it. If the microscope magnifies the object to create a larger image, why is it safe to look through microscope at the very bright object'? (This is the same concept as why projector bulbs are very bright.)Explanation / Answer
1) For a convex lens if the object distance is at infinity, the image is real, inverted and exteremely dimished formed on the back of the lens at the principle focus or focal plane.
2) The image should be real to view by a human eye. The image is magnified is focused within the distance of distint vision.
3) The polarization of light reduced intensity. Polarization by reflection causes the intensity of light redcued by moving on single direction. This improves the quality of the image and also reduces the effect on the eye while looking through microscope.