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How does focal length of convex lens change if monochromatic red light is used instead of monochromatic blue light?
Blue light travels slower in glass then red and so has a higher index of refraction. That results in a shorter focal length. Search Chromatic aberration in Wikipedia.org, "The World's Encyclopedia"
Why is the focal length negative for a convex mirror?
The focal length is negative for a convex mirror because the light rays do not actually converge at a single point in front of the mirror. Instead, they appear to diverge from a virtual focal point behind the mirror.
How does a focal length change as a convex lens becomes flatter?
As a convex lens becomes flatter, its focal length increases. This is because a flatter lens causes light to converge less, resulting in a longer focal length. Conversely, a more curved lens brings light to a focus more quickly.
Do convex lenses have negative focal length?
No, convex lenses have positive focal lengths. The focal length is the distance from the lens to its focal point where light rays converge. In convex lenses, parallel light rays are focused to a point on the opposite side of the lens, resulting in a positive focal length.
What is the power of a convex lens with 10cm focal length?
The power of a lens is calculated as the reciprocal of its focal length in meters. Therefore, a convex lens with a 10 cm focal length has a power of +10 diopters.
What happens to focal length when convex lens is cut horizontally?
no change
How does focal length of convex lens change if monochromatic red light is used instead of monochromatic blue light?
Blue light travels slower in glass then red and so has a higher index of refraction. That results in a shorter focal length. Search Chromatic aberration in Wikipedia.org, "The World's Encyclopedia"
Why is the focal length negative for a convex mirror?
The focal length is negative for a convex mirror because the light rays do not actually converge at a single point in front of the mirror. Instead, they appear to diverge from a virtual focal point behind the 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.
How does a focal length change as a convex lens becomes flatter?
As a convex lens becomes flatter, its focal length increases. This is because a flatter lens causes light to converge less, resulting in a longer focal length. Conversely, a more curved lens brings light to a focus more quickly.
Do convex lenses have negative focal length?
No, convex lenses have positive focal lengths. The focal length is the distance from the lens to its focal point where light rays converge. In convex lenses, parallel light rays are focused to a point on the opposite side of the lens, resulting in a positive focal length.
What is the power of a convex lens with 10cm focal length?
The power of a lens is calculated as the reciprocal of its focal length in meters. Therefore, a convex lens with a 10 cm focal length has a power of +10 diopters.
If a convex lens of focal length f splits into two equal parts what will be the new focal length?
there can be two ways to cut a convex lens into two equal parts-- one, along the principal axis and another, perpendicular to the principal axis. If the lens is cut along the principal axis, then there will bo NO change in the focal length of the lens. But, if it is cut perpendicular to the principal axis, then the focal length will be twice the original one.
What happens to the focal length of convex lens when convex lens is cutted vertically along the optic center?
its focal lenght becomes 2f
Why focal length of convex lens is easier to find than a concave lense?
The focal length of a convex lens is easier to find than a concave lens because for a convex lens, the focal length is positive and is measured from the lens to the focal point. In contrast, for a concave lens, the focal length is negative and the rays of light are diverged. This makes it more challenging to find the focal point accurately.
Will the focal length be greater in a thick or thin convex lens?
The focal length will be greater in a thin convex lens compared to a thick convex lens. Thinner lenses have less curvature, causing light rays to converge more gradually and thus increasing the focal length.
What will happen to the focal length of a concave mirror or a convex mirror when the incident violet light on them is replaced by red light?
Nothing. The focal length is defined as point where all of the light converges after passing through the lens ( for a convex mirror)and only depends on the mirror's curvature. So changing the incident light ray will cause no change in the focal length of the mirror.
