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- When light passes through the glass plate, the light doesn't bent so the focal length becomes infinity. And we have power=1/focal length, so power remains zero.
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How do you find the new focal length when the lence is put in to the water?
to find the new focal length when the lens is put into water it becomes the 4 times the focal length in air.
How does the focal plane change as you change the magnification?
It does not. For an explanation of "focal plane" see the question What is the focal plane?
What would be the effect on magnification to increase the focal length of microscope and telescope?
The focal length of a telescope is directly related to the magnification in that the longer the focal length, the more magnification you get from the telsceope. How the focal length of a telescope relates to the length of the telescope itself depends on the design of the telescope. In a refracting telescope, the focal length is approximately the length of the telescope. In a reflecting telescope, the focal length is roughly two time the length of the telescope.
If the primary mirror of a telescope have a focal length of 225 centimeters and the eyepiece has a focal length of 7.5 millimeters then what is the magnifying power of the telescope?
The magnifying power of a telescope is the focal length of the scope in millimeters, divided by the focal length of the eyepiece in millimeters. Focal length of scope: 225cm=2250mm Focal length of eyepiece: 7.5mm 2250/7.5= 300X
What will decreasing a telescope's eyepiece focal length?
The magnification of the telescope image is(focal length of the objective) divided by (focal length of the eyepiece).The focal length of the objective is fixed.Decreasing the focal length of the eyepiece increases the magnification of the image.(But it also makes the image dimmer.)
What is a focal length of a plane mirror?
Focaal length for plane mirror is 0
What is the power of a plane mirror?
Power is ZERO Since power = 1/ focal length As focal length of plane mirror is infinity, its reciprocal is 0
What is power of plane glass sheet?
it is zero . Power = 1/focal length The focal length of a plane glass or mirror is infinite, therfore power is zero
How do you find the new focal length when the lence is put in to the water?
to find the new focal length when the lens is put into water it becomes the 4 times the focal length in air.
How does the focal plane change as you change magnification?
It does not. For an explanation of "focal plane" see the question What is the focal plane?
How does the focal plane change as you change the magnification?
It does not. For an explanation of "focal plane" see the question What is the focal plane?
How can we find focus of a lens?
Focus or focal length?
How do you find radius of curvature if focal length is given?
radius of curvature = 2Focal length
What happens if you decrease a telescopes eyepiece focal length?
The magnification of the telescope image is(focal length of the objective) divided by (focal length of the eyepiece).The focal length of the objective is fixed.Decreasing the focal length of the eyepiece increases the magnification of the image.(But it also makes the image dimmer.)
Length of a lens is the distance from the center of the lens to its principal focus?
It is called the focal length. It is equal to 1/2 times r, and is positive on concave mirrors and negative on convex mirrors.
If a telescope has an objective lens of 3 inches what is the focal length?
The size (diameter) of a lens does not determine its focal length. The amount of curvature of the lens does. Citing a diameter for a lens doesn't help us find the focal length. Lenses are ground to specifications that allow short or long focal length. The more curved the lens, the shorter the focal length. You can see this if we specify a given curvature and then start to "flatten" the lens. The focal length will get longer and longer as the lens is flattened. When the lens is flat (has to curvature) the lense has an infinite focal length, just like a piece of flat glass.
What would be the effect on magnification to increase the focal length of microscope and telescope?
The focal length of a telescope is directly related to the magnification in that the longer the focal length, the more magnification you get from the telsceope. How the focal length of a telescope relates to the length of the telescope itself depends on the design of the telescope. In a refracting telescope, the focal length is approximately the length of the telescope. In a reflecting telescope, the focal length is roughly two time the length of the telescope.
