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

Motor, illustrate the parts and function of motor

illustrate the parts and function of motor

Kohlrauschs law, Kohlrausch's law (F. Kohlrausch): If a salt is dissol...

Kohlrausch's law (F. Kohlrausch): If a salt is dissolved into water, the conductivity of the solution is the total of two values one based on the positive ions & the other dep

A body has a weight w kg on the surface of earth, A body has a weight W kg ...

A body has a weight W kg on the surface of earth. What will be its weight on the surface of moon in gravitational units of force and SI units? Ans) mass of body=W/g At moon w

The Physical Pendulum, Derivation of Equation of the physical pendulum

Derivation of Equation of the physical pendulum

How energy is delivered to such a bulb in an hour, The power distribute to ...

The power distribute to a 15 watt light bulb in normal operation is 15 watts. In normal operation how greatly energy is delivered to such a bulb in an hour? Feedback:

What is the circumference of the ball, Suppose a baseball rolls 3.2 m acros...

Suppose a baseball rolls 3.2 m across the floor. If the ball's angular displacement is 82 rad, what is the circumference of the ball?

Conducting materials, A copper wire whose diameter is 0.16 cm carries a ste...

A copper wire whose diameter is 0.16 cm carries a steady current of 10 A. What is the current density of the wire?Also calculate the drift velocity of the electrons in copper.

Light-emitting diode, Describe the internals of a light-emitting diode (LEO...

Describe the internals of a light-emitting diode (LEO). Describe what happens internally when sufficient current is applied to activate LED.  What isthe device pictured? Wh

Water jet machining, Water jet machining is an advanced method for cutting ...

Water jet machining is an advanced method for cutting plates using a high-velocity water jet mixed with abrasive powder. The jet comes out of a nozzle A of diameter d and follows t

Nature of light, An electron is in a box of width 3*10^-10m.what are de bro...

An electron is in a box of width 3*10^-10m.what are de broglies wavlength and magnitude of momentum of the electron if it is in A)n=1 level B)n=2 level C)n=3 level Ans) use the

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