# If the distance from a converging lens to the object is less than the focal length of the lens what willl the image appear to be?

# Why is the power of a lens the reciprocal of its focal length?

Optical power is the degree to which the lens will converge ordiverge light. The unit of measurement is the diopter and isdirectly related to how much a beam of light is bent by the lens.

# If the distance from a converging lens to the object is less than the focal length of the lens the image will be?

cannot be seen The image will be at infinity. That's to say, there won't be any image formed.

# How does the thickness of a lens effect its focal length?

\nFor convergent lenses identical in every other respect, the thicker lens will have a shorter focal length.

# A 2cm tall object is placed perpendicular to the principal axis of a convex lens of focal length 10cmThe distance of the object from the lens is 15cm Find the position nature and height of the imag?

An image formed by a convex lens is described by the lens equation1/u+1/v=1/f, where u is the distance of the object from the lens, vis the mage distance from lens and f is the focal length of themirror. The question states that f=10cm and u=15cm, This can besubstituted in the lens equation as follo…ws: 1/15+1/v=1/10 1/v=1/30 V=+30 Magnification =v/u =30/15=2. The positive sign of vmeans the image is real, inverted and it on the opposite side ofthe object. Solution: The image is twice the same size as theobject, real, inverted and on the opposite of the object. (MORE)

# If the distance from converging lens to the object is less than the focal length of the lens the image will be?

If the distance from the converging lens to the object is less than the focal length of the lens the image will be out of focus. I would have to agree with the statement but alsoadd that tha image would be upright, virtual, and larger than the object!

# What is the power lens which has a focal length 20cm?

Converging/diverging power = 1 / focal length = 1 / 0.20 = 5 per meter = 5 diopters

# What is the relationship between object distance image distance and focal length?

The relation between the object distance (p), the image distance (q), and the focal length (f) of a thin lens is (1/p) + (1/q) = 1/f

# An object is placed in front of a converging lens in such a position that the lens f 14.0 cm creates a real image located 27.0 cm from the lens Then with the object remaining in place the lens?

if ur asking what is the position of the object, you can use this formulas.
1/f = 1/di + 1/do.
f: Focul length (14 cm).
di: Image Distance (27 cm).
do: Object distance (?).
Object Distance ( do) = 4.69 cm

# In the distance from a converging lens to the object?

The distance from a converging lens to the object is called focallength. The object distance is equal to the image distance.

# If the image distance from a len is 5cm and the object distance is 7.5 cm what is the focal length of the lens?

Use the thin lense equation. 1/f = 1/d + 1/o, where f is the focal length, d is the image distance, and o is the object distance.

# 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 foca…l 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. (MORE)

# How would you find the focal length of lens?

Have light from a very distant object directed through the lens onto an opaque, white surface. Change the distance from the lens to the projection surface until the distant object shows a sharp image on the surface. The distance from the lens to the surface at that point is the focal length.

# How can you tell what the focal length is for a lens?

Easy way: Use it to form an image of the sun or moon, and measure the distance of the image behind the lens..
When the object is at infinity, the distance between the lens and the image is the focal length of the lens.

# The distance between the lens and the image?

If 'f' is the focal length of the lens, and 'o' is the distance between the lens and the object, then the distance between the lens and the image is:.
('f' times 'o') divided by ('o' minus 'f')

# Place an object between a magnifying lens and its focal point The image is blank and blank the object?

Place an object between a magnifying lens and its focal point. Theimage is right side up and larger than the object

# What is the meaning of focal length in a camera lens?

The focal length of a camera's lens refers to the the magnification or telephoto power of the lens and is expressed in the millimeters of the lens, like 100mm, 300mm, etc. .
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# Describe the image formed by a concave mirror when an object is less than one focal length from the mirror?

The image formed by a concave mirror, when an object is that one focal length from the mirror is not only smaller than the mirror, but is also upside down. In order for an image to be right side up, it must be more that one focal length away.

# Why does the lens on a camera have a short focal length?

The short focal length of a camera lens is so that the image the lens forms is small and can be focused on a piece of light-sensitive film.

# How can you calculate the focal length of a lens?

Basically, the focal length is the distance from the center of the lens to the focal point or the principal foci. The calculations will depend on the curvature of the lens, the lens thickness, and the refractive index of the material that the lens was made out of. Wikipedia has a great descriptio…n of lens focal length, see the link to this article in the related link section below. (MORE)

# Is the image from a converging lens real or virtual?

If the object is more distant from the lens than the focal length of the lens, a real image is formed.

# If an object is closer to a convex lens than one focal length the image is?

If an object lies within the focal length of a convex lens, its image will be erect, bigger in size and virtual. It will be on the same side of the object.

# What two properties of a lens affect the focal length?

the material the lens is made from the centers of curvature of the two sides of the lens

# How to find out the focal length of a telescope for lens?

For most purchased telescopes, the focal length of the objective lens will be printed on the lens' mounting ring, and it will definitely be stated somewhere on the packing box and in the literature that comes with it. The focal length of any unknown lens can be measured by using the sun, the …moon, or a distant street-light at night. Focus an image of the distant light, through the lens, and onto a piece of white paper or tissue. The distance between the lens and the sharpest image is the focal length of the lens. Technically, the object must be infinitely far away. So the farther the light source is, the more accurate the measurement is. That's why it's good to use the sun or the moon as the source. (MORE)

# How do you find how far an image is formed from the lens if you have the distance from the lens to the object and the focal length how do you solve for distance from image that is formed?

Here's the equation you want. It's called the "Lensmaker's Formula". 1/i + 1/o = 1/f i = image distance from the lens o = object distance from the lens f = focal length of the lens

# Will the focal length be greater in a thick or thin convex lens?

Thick because the thicker the lens the further the focal point will be because it will push it more

# Focal distance of a concave lens is always what?

The focal distance of a concave lens is always negative. On the other hand, the focal distance of a convex lens is always positive.

# Explain how the focal length of a convex lens changes as the sides of the lens become less curved?

The focal length of a lens is the distance from the center of the lens to the point at which it focuses light rays. The bigger the focal length, the more powerful the lens. ChaCha!

# At the focal point of a converging lens can the object be seen?

Yes, but it doesn't just float there in thin air. You need something there to make the image show up, such as smoke, tissue paper, fog, steam, ground (frosted) glass, etc. If you don't have any of those, you can take a short-focus eyepiece and look at the focal point with it. In the eyepiece, …you'll see the image at the focal point. (It won't look like an image. It'll look like the object.) (MORE)

# What is the focal length of a lens when an object that is 5 meters in front of the lens froms an image that is 2 meters behind the lens?

1/f = 1/i + 1/o 1/f = 1/2 + 1/5 = 7/10 f = 10/7 meters

# What factors can affect the focal length of a lens?

There are many factors affecting the focal length of a lens, these include: - The thickness of a lens. - The curviture of a lens. - The material the lens is made out of. E.g. Glass or plastic. - The light intensity going through the lens. - The shape of the lens. These, are just few of the many fa…ctors that may affect the focal length of a particular lens. I hope this has helped. (MORE)

# What is the define the focal length of a convex lens?

The focal length is the sicence that deals with when make this image on the screen about disruption or clear and we can use it in the field of elicrical technology and etc...

# How diverging lens can produce images that are smaller than the object?

When the object is located at the 2F point, the image will also belocated at the 2F point on the other side of the lens. In thiscase, the image will be inverted (i.e., a right side up objectresults in an upside-down image). The image dimensions are equal tothe object dimensions. A six-foot tall pers…on would have an imagethat is six feet tall; the absolute value of the magnification isexactly 1. Finally, the image is a real image. Light rays actuallyconverge at the image location. As such, the image of the objectcould be projected upon a sheet of paper. Source: The Physics Classroom : Object-Image Relations (Image is on site) (MORE)

# How does a focal length change as a convex lens becomes flatter?

d focal lenght increases due to increases in the distance between centre of curvature and the centre of the convex lens on the principal axis

# Does a thinner and less convex lens have a shorter focal length and low optical power?

It is not necessary that a thinner convex lens have less optical power or a thicker lens has more optical power

# What are the factors affect on focal length of lens?

There are three factors affecting the focal length of a lens. 1. refractive index of the material of lens. 2. refractive index of the surrounding medium 3. the radius of curvature of the lens surfaces.

# What is a wide angle focal length lens?

With a 35mm sensor a wide angle is 24mm to 35mm and a wide angle is below 24mm.

# When object is positioned at more than twice the focal length of a convex lens what are the properties of its image?

1. The image will form between F and 2F. 2. The image will be real and inverted. 3. The image will be smaller in size

# What will happen to the focal length of a lens if it is cut into half vertically?

When the lens is cut vertically then the focal length of the lens will increase.the focal length will become approx double.

# How focal length of a lens change when apparatus immersed in water?

Yes , because when lens is deeped in water its R.I changes & hence focal length is increased

# How does the focal length of the lens change when you sift looking from a distant object to nearby object?

The focal length of the lens can be changed by the ciliary muscles in the eye due to which we can shift looking from a distant object to nearby object .

# What is the focal length of normal laboratory concave lens?

A "normal" concave lens might have a focal length anywhere between a few mm and a couple of metres. Outside that range there is nothing particularly abnormal, perhaps just less common.

# Where will be the image formed if the object is kept at the Focal in covex lens?

The image will be formed at infinite distance as parallel ray come out of the lens after refraction through lens.

# Which lens bends a light ray more or less with a shorter or with longer focal length?

Shorter focal length lens would bend the rays more. Longer focallength would bend the rays comparatively less.

# Can the focal length of a lens be equal to its radius?

Radius of cuvature = 2 x focal length So both cannot be equal in any way

# What happens to an image when the focal length of the lens is reduced?

If the Object you are 'focused' on stays in the same relative position to the lens, then the image will appear SMALLER on the Focal Plane. For example, the image using a 50mm lens will be LARGER than using a 28mm lens.

# How can you find focal length of a converging lens?

You can place the length in the sunlight, see where the light converges, and measure the distance.

# Which lens has a greater power convex lens of focal length 10 cm or a convex lens of focal length 20cm?

Power is inversely related to the focal length. So convex lens of focal length 20 cm has less power compared to that having focal length 10 cm

# What is the focal length of a lens?

The focal length of a lens refers to the distance from the centreof the lens to the principal foci.

# Whats the focal length of a lens?

The focal length of a lens is the distance from the principal focito the center of the lens.

# How to calculate x of a lens knowing only the focal length which is the distance from the lens to the image of sun formed by it correct me if I'm wrong?

1/(focal length) = 1/(distance of object) + 1/(distance of image)is the formula for calculating x of a lens knowing only the focallength which is the distance from the lens to the image of sunformed by it.