Wave motion-lenses, Physics

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........

Posted Date: 3/8/2013 7:53:20 AM | Location : United States







Related Discussions:- Wave motion-lenses, Assignment Help, Ask Question on Wave motion-lenses, Get Answer, Expert's Help, Wave motion-lenses Discussions

Write discussion on Wave motion-lenses
Your posts are moderated
Related Questions
When an electron makes transition from higher energy level having energy E2(n2) to a lower energy level having energy E1 (n1) then a photon of frequency v is emitted.

Sample Problem: Consider laminar flow through two infinitely wide parallel plates spaced D apart from one another. What is the thermal entry length?

what is the equation for work

Electrical Properties of Dielectric Material A loss of energy which eventually produces a rise in temperature of a dielectric placed in an alternating electric field is calle

Take the difference among your experimental value and your known value, and divide that difference by your know value. Say you experimentally found the force of gravity to be 8m/s

Consider charge of consistent surface density (charge-per-area) everywhere on an infinite horizontal plane. In computing the electric field due to such a charge distribution one ca

A circuit contains of a 10 volt battery connected in series with a 4 ohm resistor and a 6 ohm resistor. A person computes the current through the 4 ohm resistor using Ohm's Law by

Radionuclide is appropriate when several radioactive elements are involved.Most clinical diagnostics procedures used photons of some type usually gamma rays. Gamma rays with energ

Are there many type of single ends? Single ends can be no matter which from a simple cut with snips or a cutter to a sophisticated polished encapsulation. The actual method use

how do i start studying for this topic where should i start