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

Wave optics, what happened to fringes if a transparent glass is placed in f...

what happened to fringes if a transparent glass is placed in front of slits???

State the biasing network and resistor rg, Biasing Network and Resistor R...

Biasing Network and Resistor RG Biasing Network (Rs and Cs): JFET is self-biased by using the biasing network R s -C s .   Desired  bias  voltage  is  obtained  when  d.c.

Parallel combination of two capacitors, A 12 Volt battery is associated acr...

A 12 Volt battery is associated across a parallel combination of two capacitors C1 and C2. The capacitance of C2 is double that of C2.

Newton''s ring., Why is extended source use in Newtown ''s ring experiment?...

Why is extended source use in Newtown ''s ring experiment?

Friction, is pulling force easy or pushing

is pulling force easy or pushing

Eotvos law of capillarity, Eotvos law of capillarity (Baron L. von Eotvos; ...

Eotvos law of capillarity (Baron L. von Eotvos; c. 1870): The surface tension gamma of liquid is associated to its temperature T, the liquid's critical temperature, T*, & its

Evaluate the diameter of dark ring, In a Newton's ring experiment with air ...

In a Newton's ring experiment with air film the diameter of nth and (n - 5)th dark rings are 12.2 mm and 8.1 mm respectively. Evaluate the diameter of (n + 5)th dark ring

How high does the seawater rise in the bell, A cylindrical diving bell 2.00...

A cylindrical diving bell 2.00 min diameter and 5.00 m tall with an open bottom is submerged to a depth of 220 m in the ocean. The surface temperature is 25.0°C, and the temperatur

Define term practical optical fibre in short, Define term practical optical...

Define term practical optical fibre in short. Optical fibre: A practical optical fibre has in common three coaxial areas. The innermost area is the light guiding region term

Calculate the number density of iron atoms, An iron wire has a cross-sectio...

An iron wire has a cross-sectional area equal to 5.00×10-6m2. Carry out the following steps to determine the drift speed of the conduction electrons in the wire if it carries a cur

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