Friday, November 26, 2010

UGC CSIR NET Hallticket December 2010

Registration status of candidates for the Joint CSIR-UGC NET Examination scheduled on 19thDecember, 2010 

Registration status of candidates for the Joint CSIR-UGC NET Examination scheduled on
SUNDAY 19th December, 2010

Applied through bank 

Applied through On-Line Application

Thursday, September 9, 2010

TIFR announces GS-2011, TIFR Nationwide Entrance Examination for admissions to Ph.D. / Integrated Ph.D. / M.Sc. programmes.



Research Opportunities for exceptionally talented and strongly motivated students.

The Tata Institute of Fundamental Research is India's premier institution for advanced research in fundamental sciences. The Institute runs a graduate programme leading to the award of Ph.D. degree, as well as M.Sc. and Integrated Ph.D. in certain subjects. With its distinguished faculty, world class facilities and stimulating research environment, it is an ideal place for aspiring scientists to initiate their career.
The Graduate Programme at TIFR is classified into the following Subjects - Mathematics, Physics, Chemistry, Biology, Computer & Systems Sciences and Science Education. It is conducted at the Mumbai campus and various National Centres of TIFR.

Important Dates

Publication of Notification:
    University News Journal :August 23, 2010
    Current Science Journal : August 25, 2010
    University Today Journal : September 1, 2010
    Employment News : September 4, 2010
Nationwide Entrance Examination:
    Sunday, December 12, 2010
Last date for application:     October 16, 2010

Test Timings

Morning Session: 09:30 a.m. to 12:30 p.m.

  • Physics
  • Chemistry
  • Computer & Systems Sciences

Afternoon Session: 02:30 p.m. to 04:30 p.m.



  • Mathematics

  • Biology


Programmes

Ph.D.: Mathematics (TIFR, Mumbai & CAM, Bangalore), Physics, Chemistry, Computer & Sytems Sciences, Biology (TIFR, Mumbai & NCBS, Bangalore).




Integrated Ph.D.: Mathematics (CAM, Bangalore), Biology (TIFR, Mumbai & NCBS, Bangalore).

M.Sc.: Biology (TIFR, Mumbai).

Eligibility

  • Mathematics:  For Ph.D. (Mumbai): M.Sc./B.E./B.Tech./M.Tech./M.A./ B.A./B.Sc. degree holders.  For Ph.D. (Bangalore): M.A./M.Sc. Degree holders.
    For Integrated Ph.D. (Bangalore) : B.A./B.Sc./B.E./B.Tech. degree holders.
  • Physics & Chemistry:  For Ph.D. : M.Sc./B.E./B.Tech./ M.Tech degree holders. Final year B.Sc. students with consistently good academic record are also eligible to apply.
  • Biology:  For Ph.D. : Masters in Basic Science or Bachelors in Applied Science.  These include M.Sc. (Agriculture), B.Tech., B.E., B.V.Sc., B.Pharma. (4 year course), MBBS, BDS, M.Pharma.  For Integrated Ph.D./M.Sc. : Bachelors in any Basic Science.

    Students with training in Physics or Chemistry  are also invited to apply for the biology programmes.

  • Computer & Systems Sciences:  For Ph.D. : B.E./B.Tech./M.E./M.Tech./MCA/ M.Sc. (Computer Science / Electrical Engineering / Electronics Engineering / Information Technology) degree holders.

    Exceptionally well qualified students with B.E./B.Tech./M.E./M.Tech./M.Sc. or equivalent degrees in other disciplines may also be considered.

Final year students with consistently good academic record and knowledge of advanced topics may also apply for the relevant subjects.
Candidates not holding a Master's degree and admitted to a Ph.D. programme can receive an M.Sc. degree by fulfilling prescribed requirements.
See 
http://www.tifr.res.in/~gsoffice for details.

Subjects

  • Mathematics
  • Physics Students applying for Physics also have the option to be considered for
    India-based Nueutrino Observatory (INO).  For more details on INO please see 
    http://www.ino.tifr.res.in
    The option can be indicated at the time of registration of application. 



  • Chemistry


  • Biology


  • Computer & Systems Sciences
  • Science Education For test and admission details please refer the HBCSE website.




Examination Centres

  • Ahmedabad, St Xavier's College
  • Bangalore, University of Agricultural Sciences
  • Bhubaneshwar, Utkal University
  • Chandigarh, Panjab University
  • Chennai, Indian Institute of Technology
  • Cochin, Cochin Univ. of Science & Technology
  • Delhi, Miranda House, Delhi University
  • Guwahati, Indian Institute of Technology
  • Haldwani, Motiram Baburam Govt. P.G. College
  • Hyderabad, Hyderabad University
  • Indore, Devi Ahilya Vishwavidyalaya
  • Jaipur, India International School
  • Jammu & Kashmir, Jammu University
  • Kanpur, Indian Institute of Technology
  • Kolkata, (exact venue will be announced shortly)
  • Madurai, The Madura College
  • Mangalore, University College, Mangalore University
  • Mumbai, Tata Institute of Fundamental Research
  • Nagpur, Shri Ramdeo Baba Kamla Nehru Eng. Coll.
  • Patna, Radiant International School
  • Pune, Inter-University Centre for Astronomy & Astrophysics (IUCAA)
  • Varanasi, Banaras Hindu University
  • Visakhapatnam, Andhra University


Sunday, September 5, 2010

abc of electronics

hai just want to suggest a link www.abcofelectronics.com to all those who are eager to learn electronics but finding it hard by means of textbook

Wednesday, August 11, 2010

velocity of ultrasonic waves in liquids

Aim



To determine the velocity of ultrasonic waves in the given liquids (kerosene,ccl4) using accoustic grating method & hence to find its compressibility.


Apparatus



SODIUM VAPOUR LAMP


TRANSDUCER IMMERSED IN LIQUID






spectrometer, monochromatic light source, ultrasonic transducer, rectangular cup containing test liquid.




Principle

velocity of ultrasonic waves is given by

                                                        V = fλ

Where

v- velocity

f- frequency

λ  wavelength


When ultrasonic waves are generated in a liquid kept in rectangular vessel, the wave can be reflected from the walls of the vessel. The direct and reflected waves get superimposed, which causes a standing wave to be formed. The density of the liquid at the node will be more than the density at an antinode. Under these conditions, if a beam of light is passed through the liquid at right angles to the wave the liquid acts as a diffraction grating. Such a grating is known as an acoustical grating.
Here, the node acts as the transmitting slit and the antinode acts as the opaque part...thus resembling a normal ruled diffraction grating. This is obvious because the nodes have points of minimum density and hence allow more amount of light to pass through them than those at antinodes. Thus, the nodes act like slits.
If this SLITs whose element grating is equal to the wavelength of the ultrasonic waves ,are illuminated with monochromatic light,. Let it be denoted by d. If λ is the wavelength of the light passed through the grating which is diffracted by an angle θ, then the nth order of the maximum is given by


                                                                 d sinθ= nλ


d->  distance between slits produced by nodes and antinodes.


Θ -> diffraction angle


λ-> wavelength of monochromatic light


If frequency given and we found ‘d’ then.






Velocity v = fd


f->frequency of ultrasonic wave

d-> grating elemenT




now, if ‘ρ’ is the frquency of liquid, v its velocity,
then, bulk modulus     K= v2ρ





compressibility is the reciprocal of bulk modulus :


compressibility= 1/K






procedure




1. initial adjustments are made and telescope is properly focussed.


2. Rectangular cup containing liquid is placed on the prism table.


3. An ultrasonic transducer connected to RF oscillator is put to that cup which is illuminated by monochromatic light of wavelength λ


4. A diffraction pattern is observed by looking through telescope.


5. Set crosswire to coincide with nth order (say 3rd order) of the diffraction pattern on one side of the central bright line and take the readings of vernier.


6. Take readings of 2nd, 1st order on the same side and 1st,2nd and 3rd order of the other side.

7. Repeat the experiment for the other liquid

8. Difference between the vernier readings of same order on the opposite sides give 2θ, substitute in the equations given.





Warning:


Telescope should be rotated only in one direction.