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Optical power is the degree to which the lens will converge or diverge light. The unit of measurement is the diopter and is directly related to how much a beam of light is bent by the lens.
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∙ 9y ago
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What will be the power of convex lens having a focal length is 50 cm?
Convert the focal length to meters, then take the reciprocal. That is how the "power" of a lens is calculated.
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).
How do you convert from meters to diopters?
Take the reciprocal of the focal length measured in metres. The optical power of a lens (or mirror) with a focal length on 2.5 metres is 1/2.5 = 0.4 dioptres.
What is a positive lens the same as?
A positive lens is also called a magnifying lens. It has convex surfaces and it has a measureable focal length where it produces an inverted image of a distant object. The power in dioptres is the reciprocal of the focal length in metres.
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
Which lens provides more magnification-a low power or a high power?
A lens of short focal length has a greater power (than a lens of large focal length)
How do you find the power of a lens?
The power of a lens is 1/focal length (measured in meters).
What is the power of the high power lens?
scanning-40x low-100x high-400x
A concave lens is kept in contact with convex lens of focal length 20cm the combination works as a converging lens of focal length 100cmcalculate the power of concave lens?
i think it is -0.06m i.e. 6cm
How do you find power of a power?
The power of a lens is 1/focal length (measured in meters).
Whats the focal length of a lens?
The focal length of a lens is the distance from the principal foci to the center of the lens.
