Find the power of a concave lens of focal length


Asked by admin @ in Physics viewed by 288 People


Find the power of concave lens of focal length 2 m.

Answered by admin @



Hloo dear.....

focal length is given tga 2 m


power of lens p = 1/f

P = 1 / -2 ( v shd always take it negative)

P = -0.5 D


hope it helps

@sonu

Similar Questions

Find the power of concave lens of focal length

Asked by admin @ in Physics viewed by 257 persons

Find the power of concave lens of focal length 2 m.

Find the focal length of lens of power 2d

Asked by admin @ in Science viewed by 320 persons

Find the focal length of a lens of power , -2 D .what type of lens is this ??answer fast...

Find the focal length of a lens of power

Asked by admin @ in Science viewed by 283 persons

Find the focal length of a lens of power - 2.0 D. What type of lens is this?

Power of lens is its focal length is

Asked by admin @ in Physics viewed by 313 persons

Power of the lens is -4d, then its focal length is -----?

A concave lens of focal length 15 cm

Asked by admin @ in Physics viewed by 334 persons

a concave lens of focal length 15 cm forms an image 10cm from the lens. how far is the object placed from the lens draw the ray diagram

Power of a lens is its focal length is

Asked by admin @ in Physics viewed by 268 persons

Power of the lens is -4d, then its focal length is -----?

A concave lens has a focal length of 20cm

Asked by admin @ in Physics viewed by 325 persons

A concave lens has focal length of 20 cm. At what distance from the lens should a 5 cm tall object be placed so that it forms an image at …

Focal length of concave lens is positive or negative

Asked by admin @ in Physics viewed by 337 persons

Why is the focal length of concave lens taken as negative​

Power of the lens is its focal length is

Asked by admin @ in Science viewed by 311 persons

Power of a lens is -4 its focal length is what

Power of convex lens of focal length 50 cm is

Asked by admin @ in Physics viewed by 353 persons

The focal length of a convex lens is 50 cm. what is its power?​

The power of lens is 5d its focal length is

Asked by admin @ in Physics viewed by 268 persons

Power of lens is +5D . find focal length

A convex lens of focal length 25 cm

Asked by admin @ in Physics viewed by 317 persons

A convex lens of focal length 25cm and a concave lens of focal length 10cm are placed in close contact with each other. Calculate the lens power of this combination.

For a concave mirror of focal length 20cm

Asked by admin @ in Physics viewed by 285 persons

A concave mirror of focal length 20cm produces an image twice the height of an object .if the image is real ,then the distance of the object from the mirror …

Two plano convex lens each of focal length 10cm

Asked by admin @ in Physics viewed by 325 persons

Two plano convex lenses each of focal length 10cm and refractive index 3/2 are placed as shown in the future. in the space left, water (r.i=4/3) is filled. the whole …

A biconvex lens has focal length 2 3 times

Asked by admin @ in Physics viewed by 316 persons

A bi convex lens has focal length 2/3 times radius of curvature of either surface calculate refractive index of the lens material

Most viewed questions in Physics


Jeevandeep health and physical education std 10 answers pdf

Asked by admin @ in Physics viewed by 11065 persons


Hc verma physics class 9 solutions of describing motion

Asked by admin @ in Physics viewed by 2663 persons


How to leave nightmare land answer key

Asked by maham237 @ in Physics viewed by 1590 persons



Base area and stability of some objects with different shapes

Asked by admin @ in Physics viewed by 1524 persons


Which of the following statements about safe lifting are correct

Asked by admin @ in Physics viewed by 1512 persons


Porous water-absorbing mass of fibers

Asked by wiki @ in Physics viewed by 1490 persons



Absorption of water by filter paper is due to

Asked by admin @ in Physics viewed by 1431 persons


A composite wire of uniform diameter 3mm

Asked by admin @ in Physics viewed by 1399 persons


At a distance l 400m from the traffic light

Asked by admin @ in Physics viewed by 1318 persons



A rocket of mass m is launched straight up with thrust f⃗ thrust.

Asked by maham237 @ in Physics viewed by 1311 persons


Mind map for light reflection and refraction class 10

Asked by admin @ in Physics viewed by 1141 persons



A thief runs at a speed of 10m s

Asked by admin @ in Physics viewed by 1094 persons


A 5.8 x 10 4 watt elevator motor can lift

Asked by maham237 @ in Physics viewed by 1077 persons