Code No: X0324
Time: 3 hours
SET - 1
II B. Tech I Semester Supplementary Examinations Dec - 2013
(Com. to ME, AE, AME)
Max. Marks: 80
Answer any FIVE Questions
All Questions carry Equal Marks
1. a) What do you understand by macroscopic a
1. Similar atoms form an element that have their own unique chemical properties
because of different amount of proton, neutron and electron.
2. The elements try to achieve balance atomic like noble gas(octet state) by the
bonds whereas ionic bond and
WHAT WE WILL LEARN?
Light always moves at the same speed in
vacuum independent of the velocity of the
source or observer
Measurements of time and space intervals are
different for different observers who are relative
to each othe
THE DIFFRACTION GRATING SPECTROMETER
1. To becomefamiliar with theuseof a diffiactiongratingspecftometer
2. To measurethe wavelengthsof certain lines in the spectnrmof the
mercury arc lamp.
Physics 102 Lab 8: Measuring wavelengths with a diffraction grating
Dr. Timothy C. Black
The diffraction of classical waves refers to the phenomenon wherein the waves encounter an obstacle that
fragments the wave into c
THE PHOTOELECTRIC EFFECT
To study the emission of electrons from a metal surface which is irradiated with light.
To experimentally determine the value of Planck's constant "h" by making use of the
spectral dependency of the photoelectric effect.
PLANCK'S CONSTANT AND
THE PHOTO-ELECTRIC EFFECT
In the late 1800's scientists believed that the main principles of physics were well
There were, however, some phenomena such as blackbody radiation and the
photoelectric effect that had
H2. Schuster Experiment:
Electron Specific Charge e/m
I.OBJECTIVE OF THE EXPERIMENT
We will study the behavior of an electron beam in an electromagnetic field. We will determine the
specific charge e/m of the electron by measuring the radius of the circul
OBJECT: To verify the photon theory of light as applied to the photoelectric effect.
EQUIPMENT LIST: RCA 934 phototube, two Fluke 37 multimeters, Hewlett-Packard
6235A Triple Output Power Supply, Halogen Table Lamp, set of light filte
Balmer series / Determination of Rydbergs constant
Diffraction image of a diffraction grating; visible spectral
range; single electron atom; Bohrs atomic model; Lyman,
Paschen, Brackett and Pfund Series; energy level; Plancks
The Rydberg Constant
The light you see when you plug in a hydrogen gas discharge tube is a shade of lavender,
with some pinkish tint at a higher current. If you observe the light through a
spectroscope, you can identify four distinct lines of col
Determination of the Specific Charge of the Electron
Study Cathode rays.
Study Lorentz force.
Study of the deflection of electrons in a magnetic field into a circular orbit.
Determination of the magnetic field B as a function of the acceleratio
The Rydberg Constant
Observe, measure, and analyze the emission spectrum of a hydrogen
gas discharge tube.
Use the data from the hydrogen emission spectrum to calculate the
White light is ma
Specific charge of the electron e/m
Cathode rays, Lorentz force, electron in crossed fields, electron mass, electron charge.
Principle and task
Electrons are accelerated in an electric field and enter a magnetic field at right
E X P E R I M E N T
Emission Spectrum of Atomic Hydrogen and the Rydberg constant
The optical spectrometer is a precision instrument capable of an accuracy of measurement far
greater than that found in most other areas of physical measur
II.6. THE DETERMINATION OF THE RYDBERG CONSTANT
1. Work purpose
The determination of the constant involved in the spectral series of the
hydrogenoid atoms / ions.
The atoms of each element emit, when they are excited (for instance
in an electric
2 The Balmer Series of Hydrogen
Determination of the Rydberg
(Reference: Mansfield and OSullivan pp. 572579)
Observing that atoms only emit light at definite spectral frequencies demonstrates electrons in atoms only populate distinctive (quantiz
KALMAN KNIZHNIK - DERIVATION OF THE STEFAN-BOLTZMANN LAW
Here we derive the Stefan-Boltzmann law, which describes the energy density spectrum of blackbody
radiation. We begin by modeling the energy spectrum of a photon gas as a simple harmonic
The world we live in is a complex place, and we must expect any
theory that describes it accurately to share that complexity. But
there are three assumptions, satised at least approximately in many
Make all connections with the power supply off.
Connecting leads used for the HT voltages must have adequate insulation.
The HT supply can deliver a fatal current. Use 4 mm leads with plugs having sprung shrouds for
all high-voltage connections. The teach
The Rydberg constant, symbol R or RH, named after the Swedish
physicist Johannes Rydberg, is a physical constant relating to atomic
spectra, in the science of spectroscopy. The constant first arose as
an empirical fitting parameter in the Rydberg formula
Early Photoelectric Effect Data
Electrons ejected from a sodium metal surface were measured as an electric current.
Finding the opposing voltage it took to stop all the electrons gave a measure of the
maximum kinetic energy of the electrons in electron vo
THE FIRST LAW OF THERMODYNAMICS
STUDY PROBLEM 5-1
The kinetic and potential energy of a car
A car of mass 1100 kg drives with a velocity so it has a kinetic energy of 400 kJ. Find the velocity.
If the car is raised with a c
Class 16. Transient behavior in forced
(based on material provided by Norbert Mulders)
In preceding sections, we obtained the steady state solution for the driven damped harmonic
oscillator. We can write this solution as
xss ( t ) = Ass cos
- - -\A
! .: e : c.~
( b ~ (~"rdrJ~1
1 - d 11
Vc. -) ~Y'fnt l
:- - d
~ t f ,"'~"'(. Iw-,
"o"pt>. tdu. .
R d t.
Source : The Dungarvan Observer (April 23, 2003).
By Roisin O'Shea
An invited audience including County Mayor Lola O'Sullivan and Cllr. Betty Twoomey watched a preview
of a documentary last Tuesday evening, scheduled for release on RTE later this year, at
Tutorial No-2-( Perfect Gas)
Q1/ Air is contained in a vertical cylinder fitted with a frictionless pistion and a set
of stop as shown in fig(1). The piston cross sectional area is 0.2 m2 and the air
inside is initially at 200 kpa, 500 C 0. The air is tha
Biomedical evidence of geopathic stress and
harmonization with Geowave
This is a summary of a study published in 2005, Biomedical
Evidence for Influences of