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

How temperature of sun rays increase by sunlight reflected, Does sunlight r...

Does sunlight reflected off a mirror enhance the temperature of the sun-rays? A standard planar mirror will not enhance the energy contained in the rays that reflect off it. In

Name the communication in which the sign is a discrete, With that purpose w...

With that purpose was famous Davisson-Germer experiment with electrons performed? Name the type of communication in which the sign is a discrete and binary coded version of the

Cathode rays are, Cathode rays are : (1)Protons (2)Electrons      ...

Cathode rays are : (1)Protons (2)Electrons      (3)Neutrons (4)alfa -particles Ans; (2)Electrons

Find angle of incidence when both rays are perpendicular?, Sol: The inci...

Sol: The incident angle is 45 because the angle of reflection and angle of incident is equal.

Motion equations, derivation by calculas method of Snth = (Sn – Sn -1) = u ...

derivation by calculas method of Snth = (Sn – Sn -1) = u + a/2 (2n – 1)

gravity, what is newton law of gravitation

what is newton law of gravitation?

Determine the upward force, The force applied at A is P30 Newton's, and P31...

The force applied at A is P30 Newton's, and P31 and P32 are dimensions in mm.  A mechanic uses his left hand to support the wrench at point B. Determine the upward force required a

ULTRA SONICS, WHAT IS THE FREQUENCY OF ULTRA SONICS

WHAT IS THE FREQUENCY OF ULTRA SONICS

Average speed, A boy goes to market with a average speed of 29 km/h.He retu...

A boy goes to market with a average speed of 29 km/h.He returns back half the way he went with a average speed of 40 km/h.Find average speed for whole journey.

Three resistors connected in series , Explain the combined resistance of th...

Explain the combined resistance of three resistors connected in series with resistance of 20 ohm, 30 ohm and 40 ohm? (Solve problems with resistors in sequence)              20Ω

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