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What is the unit of power of lens in mks system?
The dioptre, which is equal to 1/meter.
Unit of measurement of a lens's refractive power?
Diopter (D)...
Why convex lens of short focal length is preferred on magnifying glass?
The power of a lens is measured in dioptres which is the reciprocal of the focal length in metres. A 5-dioptre lens would allow you to see something at a distance of 20 cm, while a 20-dioptre lens would allow the object to be seen from 5 cm (2 inches) so it would be more effective as a magnifying glass. Your arms are short.
What is magnifying power of a magnifying glass of power 12 dioptre?
Dioptre /4 =Power. Thus 12 /4 =3x magnification
A type of lens that magnifies an object?
convex converging apex... :P
What is the unit of power of lens in mks system?
The dioptre, which is equal to 1/meter.
Unit of measurement of a lens's refractive power?
Diopter (D)...
What would someone use a dioptre for?
Dioptres are used to measure the optical power of a lens or mirror. You can learn more about Dioptres online at the Wikipedia website. Once on the page, type "Dioptre" into the search field at the top of the page and press enter to bring up the information.
Why convex lens of short focal length is preferred on magnifying glass?
The power of a lens is measured in dioptres which is the reciprocal of the focal length in metres. A 5-dioptre lens would allow you to see something at a distance of 20 cm, while a 20-dioptre lens would allow the object to be seen from 5 cm (2 inches) so it would be more effective as a magnifying glass. Your arms are short.
How do you calculate power of a lens?
Reciprocal of focal length is the power P = 1/f and it's measured in dioptre (D).
How do you calculate power of lens?
Reciprocal of focal length is the power P = 1/f and it's measured in dioptre (D).
What is the lens magnification?
500 to 1000
Which lens is the type of lens that is used in hand lens?
The type of lense is a convex lense
What is magnifying power of a magnifying glass of power 12 dioptre?
Dioptre /4 =Power. Thus 12 /4 =3x magnification
What unit is to express the power of spectacles?
DioptreA dioptre, or diopter, is a unit of measurement of the optical power of a lens or curved mirror, which is equal to the reciprocal of the focal length measured in metres (that is, 1/metres). For example, a 3 dioptre lens brings parallel rays of light to focus at 1/3 metre. The same unit is also sometimes used for other reciprocals of distance, particularly radii of curvature and the vergence of optical beams. The term was proposed by French ophthalmologist Felix Monoyer in 1872
What is the other type of lens besides magnifing?
Another type of lens is the opposite called a reducing lens.
What unit is used to express the power of spectacles?
DioptreA dioptre, or diopter, is a unit of measurement of the optical power of a lens or curved mirror, which is equal to the reciprocal of the focal length measured in metres (that is, 1/metres). For example, a 3 dioptre lens brings parallel rays of light to focus at 1/3 metre. The same unit is also sometimes used for other reciprocals of distance, particularly radii of curvature and the vergence of optical beams. The term was proposed by French ophthalmologist Felix Monoyer in 1872
