Wave motion-lenses, Physics

Assignment Help:

You are given 3 lenses l1,l2,l3 each of focal length 20 an object at 40cm in front of l1.the final real image is formed at focus i ofl3,find separation between l1,l2,l3 ?

Ans) between l1&l2 its 60

& between l2&l3 it can be any value...........

for l3 to form image at i, the object must be at infinity, and for that, image formed

by l1 must be at the focus of l2,

and also image formed by l1 is 40 cm ahead of l1, i.e., the focus of l2(20 cm)

so, distance between l1 and l2 is 40+20=60 cm........


Related Discussions:- Wave motion-lenses

Estimate ground level no concentration, A stack emitting 85 g/s of NO has a...

A stack emitting 85 g/s of NO has an effective stack height of 100 m. The wind speed is 3 m/s at 10 m, and it is a cloudy summer day.  Estimate ground level NO concentration:

Mechanics, A gas is compressed from 400 cm3 to 200 cm3 at a constant pressu...

A gas is compressed from 400 cm3 to 200 cm3 at a constant pressure of 100 kPa. At the same time, 100 J of heat energy is transferred out of the gas. What is the change in internal

State polarization of the incident light, The light passing through a quart...

The light passing through a quarter wave plate is analysed by a rotating Nicol prism. It is get that the intensity of the emergent light beam from the rotating Nicol prism becomes

What is the symbol of the charge on the ball, Consider two identical plasti...

Consider two identical plastic foam balls each one having a thin sheath of aluminium foil. One of the balls has a few positive charges and the other has the same amount of negative

Electrostatic potential and capacitance., if a body contain n1 electron and...

if a body contain n1 electron and n2 proton what is the total charge on the body?

Direction of the angular velocity vector, Direction of the Angular Velocity...

Direction of the Angular Velocity Vector In physics, the angular velocity is described as the rate of change of angular displacement and is a vector quantity (more preci

An electric dipole is held in a uniform electric field, An electric dipole ...

An electric dipole is held in a uniform electric field. (1) Using suitable diagram, show that it does not undergo any translatory motion, and (2) derive an expression for the

Define hydrogen rocket, Define Hydrogen Rocket? The reaction chamber ...

Define Hydrogen Rocket? The reaction chamber of a rocket engine is supplied with a mass flow rate m of sufficient oxygen and hydrogen to allow complete burning of the fuel an

Write the expression for the equivalent focal length, Write down the expres...

Write down the expression for the equivalent focal length of two thin lenses separated by a distance and illustrate the terms.

Write Your Message!

Captcha
Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd