Why the centre of newtons rings pattern appears dark, Physics

Assignment Help:

Q. Why the centre of Newton's rings pattern appears dark?

The thickness of the air film becomes zero at the point of contact of lens L with glass plate P. Therefore there is no path difference between the interfering waves. So it must appear bright. However the wave reflected from the denser glass plate has suffered a phase change of π while the wave reflected at the spherical surface of the lens has not suffered any phase change. Therefore the point O appears dark.


Related Discussions:- Why the centre of newtons rings pattern appears dark

Determine displacement current, Show that the displacement current flowing ...

Show that the displacement current flowing between the two plaes of the capacitor is similar to the conduction current utilized in charging the capacitor.

Explain the electric forces and fields, Explain the Electric Forces and Fie...

Explain the Electric Forces and Fields This can be thought of in terms of an electric field, E, similar to the gravitational field discussed earlier [Fg = m g( r ) where at the

Dimensional analysis, if the universal gravitational force depends on the p...

if the universal gravitational force depends on the product of the masses and depends on the distance between the masses ,find an expression for the universal force, and the unit f

Problems/force-mc-rotating-two-masses.tex, A block of mass m is tied to a c...

A block of mass m is tied to a cord of length L that is pivoted at the center of a frictionless table. A second block of mass m is tied to the ?rst block also on a cord of length L

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.

Acceleration, suppose you are running and want to stop at once. surely you ...

suppose you are running and want to stop at once. surely you will have to produce negative acceleration in your speed. can you tell from where does the necessary force come ?

Determine the actual distance from first face, A small air bubble is inside...

A small air bubble is inside a cube of 0.21 m. When viewed from one face it seems to be at a depth of 0.06 m, when viewed from opposite face the bubble seems to be at a depth of 0.

Interference of light, Two slits in young''s double slit experiment are ill...

Two slits in young''s double slit experiment are illuminated by two different sodium lamps emitting light of same wavelength . Do you observe any interference pattern on the screen

What is the magnitude of the current in the circuit, A circuit which employ...

A circuit which employs a DIRECT CURRENT source has a branch which has a capacitor.  After the circuit has reached a steady state, what is the magnitude of the current in the c

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