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Why is the length of the diverging section in a venturi meter longer than the converging?
Wiki User
∙ 8y ago
The length of the diverging section in a venturi meter is longer than the converging section to allow the flow to gradually return to its original pressure and velocity. This helps minimize energy losses and turbulence, ensuring accurate flow measurement. The design aims to maintain steady flow conditions for optimal performance of the venturi meter.
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Does a diverging lens have a focal length?
Yes, a diverging lens does have a focal length. The focal length of a diverging lens is negative, as the light rays diverge after passing through the lens.
Is a magnifying glass a converging lens or a diverging lens?
A magnifying glass is a converging lens because it is thicker in the middle than at the edges, causing light rays passing through it to converge. This convergence allows the lens to magnify and focus images.
When does convex lens behave as diverging lens?
A convex lens will behave as a diverging lens when an object is placed closer to the lens than its focal length. In this case, the light rays will diverge instead of converging, leading to a virtual image formed on the same side as the object.
What is the sign of the focal length for a diverging lens?
The sign of the focal length for a diverging lens is negative. This indicates that the focal point is located behind the lens where the light rays appear to diverge.
Which lens has a greater power convex lens of focal length 10 cm or a convex lens of focal length 20cm?
The lens with a focal length of 5 cm has greater power. Power is inversely proportional to focal length, so the shorter focal length lens will have a greater power.
What are diverging and converging lenses?
Diverging lenses are thinner in the center and cause light rays to spread out. Converging lenses are thicker in the center and cause light rays to converge at a focal point. They are both important components in optical systems for focusing and manipulating light.
Does a diverging lens have a focal length?
Yes, a diverging lens does have a focal length. The focal length of a diverging lens is negative, as the light rays diverge after passing through the lens.
Is a magnifying glass a converging lens or a diverging lens?
A magnifying glass is a converging lens because it is thicker in the middle than at the edges, causing light rays passing through it to converge. This convergence allows the lens to magnify and focus images.
How do you find the power of lenses using focal lengths?
Power (F)= 1/focal length (f) focal length f, is measured in meters the power, F, is in dioptres (D) In converging or convex lenses the power is positive In diverging or concave lenses, the power is negative :)
What is a negative lens is the same as?
If the lens equation yields a negative image distance, then the image is a virtual image on the same side of the lens as the object. If it yields a negative focal length, then the lens is a diverging lens rather than the converging lens in the illustration.
When does convex lens behave as diverging lens?
A convex lens will behave as a diverging lens when an object is placed closer to the lens than its focal length. In this case, the light rays will diverge instead of converging, leading to a virtual image formed on the same side as the object.
What is the sign of the focal length for a diverging lens?
The sign of the focal length for a diverging lens is negative. This indicates that the focal point is located behind the lens where the light rays appear to diverge.
The function of the lens is to?
The function of the lens is to focus light onto the retina at the back of the eye. It adjusts its shape using ciliary muscles to help the eye see objects at different distances by changing its focal length.
Which lens has a greater power convex lens of focal length 10 cm or a convex lens of focal length 20cm?
The lens with a focal length of 5 cm has greater power. Power is inversely proportional to focal length, so the shorter focal length lens will have a greater power.
What is converging length?
Converging lens refers to a type of lens that is thicker at the center than at the edges, causing light rays passing through it to converge to a focal point. This focal point is where the light rays intersect after passing through the lens, creating a real image.
A converging lens of focal length f produces a real image of a real object when the object is what?
A real object placed beyond the focal length of a converging lens will produce a real image. This occurs when the object distance is greater than the focal length of the lens.
What happens to the path of light as it strikes a mirror and then a hand lens?
When light strikes a mirror, it undergoes reflection, bouncing off at the same angle it struck the mirror. When this reflected light then passes through a hand lens, it is refracted (bent) due to the curvature of the lens, converging or diverging based on the shape and focal length of the lens.
