Sunday, November 30, 2014

Magnetic memory filmed in slow motion by Scientists

The scientists at DESY (Deutsches Elektronen-Synchrotron) used high-speed photography to film one of the candidates for the magnetic data storage devices of the future in action. The film was taken using an X-ray microscope and shows magnetic vortices being formed in ultrafast memory cells.

English: VXA V17 tape cartridge for magnetic t...

Their work, which has been reported by the scientists surrounding Dr. Philipp Wessels of the University of Hamburg in the journal Physical Review B, provides a better understanding of the dynamics of magnetic storage materials. Magnetic memory cells are found in every computer hard drive.

Read more at http://phys.org/news/2014-11-scientists-magnetic-memory-super-slow-motion.html

Wednesday, November 19, 2014

Best wishes for PSA Exam

Problem Solving Assessment test is near. CBSE is conducting the PSA test on 20 Nov 2014. Have you prepared well?
Do you know that we have provided a good number of content and links to help you out to perform well in PSA?
JUST SEARCH FOR PSA IN THE SEARCH BAR ON TOP

[caption id="" align="aligncenter" width="252" class="zemanta-img "]Central Board of Secondary Education Central Board of Secondary Education (Photo credit: Wikipedia)[/caption]

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Get free help in physics at www.plustwophysics.com

Supplementary Material on Additional Sub-Topics included in Class XII Physics Theory Syllabus

http://cbseacademic.in/web_material/doc/2014/15_XII_Physics_Supplimentary_material.pdf

Tuesday, November 18, 2014

PSA Sample Question Papers and Previous Years' Question Papers

PSA Sample Question Papers and Previous Years' Question Papers

PSA Sample Question Papers Published by CBSE  http://cbseacademic.in/web_material/PSA/1_PSA%20IX.PDF

Problem Solving Assessment Question Paper 2014

Class-IX : P1  -   Question Paper |   Answer Key

Class-IX : PF  -   Question Paper |   Answer Key

Class-XI : A1  -   Question Paper |   Answer Key

Class-XI : AF  -   Question Paper |   Answer Key


Problem Solving Assessment Question Paper 2013  :   Class-IX |   Class-XI
PSA Awnser Keys

CLASS-IX : Exam Held on 18-01-2014 Test Booklet Code - P1 and Exam Held on 19-10-2013 Test Booklet Code - W1

CLASS-XI : Exam Held on 18-01-2014 Test Booklet Code - A1 and Exam Held on 19-10-2013 Test Booklet Code - X1



Marking Scheme of PSA question paper for February 16, 2013 exam  :   Click Here