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If an object is placed at a distance greater than twice the focal length of a convex lens what type of an image will be produced?
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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
Why do images in a concave mirror appear inverted?
If an object's distance from the concave mirror is greater than the mirror's focal length, then the mirror image of it will be inverted. If the distance from the concave mirror is less than the focal length of the mirror, the image will not be inverted. No image will be produced if the distance from the mirror to the object is equal to the mirror's focal length.
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
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
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.
What is the focal length of the convex lens?
The distance from the centre of the lens to the focal point.
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
Why do images in a concave mirror appear inverted?
If an object's distance from the concave mirror is greater than the mirror's focal length, then the mirror image of it will be inverted. If the distance from the concave mirror is less than the focal length of the mirror, the image will not be inverted. No image will be produced if the distance from the mirror to the object is equal to the mirror's focal length.
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
The distance between a mirror and its focal point is called the?
Focal length, positive number with a concave mirror, negative for a convex mirror.
Why the study was under taken of focal length of a convex lens by graphical method?
to determine the focal length of a convex mirror.
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
Explain how the focal length changes as a convex lens becomes flatter?
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!
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.
Where is the focal point in a convex lens?
If you shine a parallel (ie unfocussed) beam of light perpendicular to a convex lens it will focus to a point on the other side. That place is called the focal point of the lens. Its distance to the lens is called the focal length.
A convex lens forms a real and inverted image of a needle at a distance of 50cm from the lensWhere is the needle placed in front of the convex lens so that the image is of the same size as the object?
A convex lens forms a real and inverted image of equal size only when it is kept at the center of curvature of the lens. The image is also formed at the center of curvature at the other side. Hence, the distance of object = distance of image = 50 cm. Now, focal length = � � radius of curvature = � � 50 cm = 25 cm Hope it is clear!
Why is a convex lens of small focal length preferred for a magnifying glass?
Simply put, convex lenses make things look bigger. That is obviously beneficial in a magnifying glass. Focal length indicates the distance from the lens that something should be to be in the best focus (or not inverted). Therefore, a small focal length is best for magnifying glasses which are typically used to look at things that are very close to you.
