What is the focal length of lens of power 5 diopter?

Answer: The focal length of the lens is 20 cm.

What is the focal length of convex lens whose power is 5 diopter?

∴ Focal length = 20 cm. (Positive for convex lens.)

What is the power of the lens with a focal length of 5 cm?

The power of a combination of two or more thin lenses in contact is equal to the sum of the powers of the individual lenses. For example, a lens of -10 diopters combined with a lens of 30 diopters gives a converging lens of 20 diopters (of 5 cm focal length).

Which type of lens has a negative power the power of a lens is +5 d find its focal length in meters?

This is the focal length of the convex lens. Hence, The focal length of the lens is 20 cm.

What is the nature of the whose power of a lens is +5 D?

Given power of lens is 5 dioptre. f = 20 cm. Since, power and focal lenght of lens is in positive, so lens is Convex.

What will be the focal length of lens power?

The power of a lens is defined as reciprocal of the focal length of the lens. A lens of small focal length has a large power of converging or diverging a parallel beam of light. The power of the lens is 1 diopter if its focal length is 1 m.

What is the power and focal length of a convex lens?

The power of a lens is defined as the reciprocal of the focal length. Lens power is measured in dioptres (D). Converging (convex ) lenses have positive focal lengths, so they also have positive power values. Diverging (concave ) lenses have negative focal lengths, so they also have negative power values.

What is the magnification of convex lens of focal length 5cm?

Correct answer:The magnification of the magnifying glass is (d) 5.

What is power of convex lens?

The power of a lens is defined as the reciprocal of the focal length. Converging (convex ) lenses have positive focal lengths, so they also have positive power values. Diverging (concave ) lenses have negative focal lengths, so they also have negative power values.

When the power of a lens is 5.0 D What is the type of lens and find its focal length?

Hence,the focal length of the lens is -0.2 metres.

What is the power of a concave lens of focal length 4 m?

So, the power of the lens is 0.25 D.

What is the power of lens (P)?

Power of lens (P) = +5D As we know, the power of the lens is the reciprocal of its focal length. So, P = 1/f f = 1/P

Is the lens a convex or a converging lens?

Since the focal length of lens is positive so it is a convex lens. It is a converging lens. Was this answer helpful?

How many diopters are in a 400mm lens?

The power in diopters is the reciprocal of the focal length in metres (or meters, if you prefer). So a focal length of 1 m is 1 diopter, while a focal length of 0.25 m is 4 diopters. If “2.5 power” really means 2.5 diopters, then the lens’ focal length is 400 mm.