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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.
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.
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.
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
Magnifying power of simple microscope can be increased by?
Increasing the focal length of the lens or using a lens with a shorter focal length can increase the magnifying power of a simple microscope. Using a lens with a higher refractive index can also enhance the magnification. Additionally, increasing the distance between the lens and the object being observed can improve the magnification.
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.
What is the difference of compound microscope from a simple microscope?
compound microscope consists of 2 lences of short focal length & short aurpature .
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.
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.
What is the focal length of the convex lens?
The distance from the centre of the lens to the focal point.
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.
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
Magnifying power of simple microscope can be increased by?
Increasing the focal length of the lens or using a lens with a shorter focal length can increase the magnifying power of a simple microscope. Using a lens with a higher refractive index can also enhance the magnification. Additionally, increasing the distance between the lens and the object being observed can improve the magnification.
Construction of the simple microscope?
A simple microscope consists of a single convex lens with a short focal length. This lens is typically mounted on a frame or stand that holds it in place and allows for adjustment. The object to be viewed is placed in front of the lens and the viewer looks through the lens to see the magnified image. The magnification is determined by the focal length of the lens, which can range from 5x to 250x. The resolution of the microscope is determined by the quality of the lens. The frame or stand is typically made of metal or plastic and may include a focusing mechanism.
What happens to the focal length of convex lens when convex lens is cutted vertically along the optic center?
its focal lenght becomes 2f
How thickness effects on focal length of convex?
As the thickness of a convex lens increases, the focal length decreases. This is because a thicker lens has a more curved surface, which causes light to converge more quickly. The focal length is the distance at which the light converges, so a thicker lens leads to a shorter focal length.
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.
