Is the power of convex lens is 5 0 D then its focal length is 50 cm?

What is the power of convex lens of focal length 50?

= 100/50 = 2 dioptre. The SI unit of power is dioptre.

What will be the focal length of a lens whose power is given as 5.0 D?

Answer: Focal length is inverse of power of lense…. F= 1/ P . so focal lenght of lens of power +2D is 0.5 m.

When the power of a lens is what is its focal length?

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.

Is the power of a lens is 2D what is its focal length?

Power of a lens is -2D, negative sign indicates it is a Concave lens. Focal length (in meters)=1/power of the lens, thus focal length=1/2=0.5m=50cm. Answer: Since, Power P = -2 D, Focal length f = 100/(-2) = – 50 cm.

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What is the focal length of a lens of power 2.0 D?

Focal length of the lens is -50cm or 0.5m.

Which lens is used if its d value is negative?

The focal length of a convex lens is positive and that of a concave lens is negative.

What is the SI unit of focal length?

The SI unit of focal length is ‘metre‘.

What is the relation between focal length and power?

The optical power of a lens is equal to the reciprocal of the focal length of the lens. P = 1/f. SI unit of power is dioptre (D) and that of focal length is metre (m).

What is 2D power of lens?

Power of a lens is the reciprocal of its focal length in metres. If the power of a lens is -2D, it means that 1/f(in m) = -2D. FYI, Since the focal length will be negative, this will be a concave lens. e3radg8 and 18 more users found this answer helpful.

What is nature of lens if power of lens is 2.0 D?

Hence, it is a concave lens.

What is the focal length of concave mirror?

Focal Length – The distance between the pole P of the concave mirror and the focus F is the focal length of the concave mirror. Thus, the focal length of a concave mirror can be estimated by obtaining a ‘Real image’ of a distant object at its focus, as shown in the figure.