Power of lens is its focal length is

Asked by admin @ 25/08/2021 in Physics viewed by 315 People

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

Answered by admin @ 25/08/2021

The power of a lens is a measure of its ability to produce deviation of light. A lens of short focal length produces more deviation of light than that of a lens of larger focal length. So, power of a lens is defined as the reciprocal of its focal length. The unit of power of lens is dioptre, D where f is in meter.

Find the focal length of lens of power 2d

Asked by admin @ 20/08/2021 in Science viewed by 321 persons

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

Find the power of concave lens of focal length

Asked by admin @ 16/08/2021 in Physics viewed by 262 persons

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

Power of a lens is its focal length is

Asked by admin @ 13/08/2021 in Physics viewed by 268 persons

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

Find the focal length of a lens of power

Asked by admin @ 12/08/2021 in Science viewed by 285 persons

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

Power of the lens is its focal length is

Asked by admin @ 11/08/2021 in Science viewed by 313 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 @ 06/08/2021 in Physics viewed by 357 persons

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

Find the power of a concave lens of focal length

Asked by admin @ 06/08/2021 in Physics viewed by 290 persons

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

The power of lens is 5d its focal length is

Asked by admin @ 04/08/2021 in Physics viewed by 272 persons

Power of lens is +5D . find focal length

A convex lens of focal length 25 cm

Asked by admin @ 31/08/2021 in Physics viewed by 319 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.

A concave lens of focal length 15 cm

Asked by admin @ 24/08/2021 in Physics viewed by 336 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

Two plano convex lens each of focal length 10cm

Asked by admin @ 23/08/2021 in Physics viewed by 329 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 @ 20/08/2021 in Physics viewed by 320 persons

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

A student uses a lens of focal length 40cm

Asked by admin @ 20/08/2021 in Science viewed by 331 persons

A student uses a lens of focal length 40cm and another of -20cm. Write the nature and power of each lens.

The focal length of eye lens is controlled by

Asked by admin @ 20/08/2021 in Biology viewed by 299 persons

Which muscles control the focal length of the eye lens? give short answer?

A convex lens has a focal length of 20cm

Asked by admin @ 17/08/2021 in Physics viewed by 290 persons

a convex lens has a focal length of 20cm. calculate at what distance from the lens should be an object placed so that it forms an image at a distance …