Archive for February, 2010

Download Sample Papers for Class XII CBSE Physics

CBSE Guess Paper 1

CBSE Guess Paper 2

CBSE Guess Paper 3

CBSE Guess Paper 4

CBSE Guess Paper 5

CBSE Guess Paper 6

CBSE Guess Paper 7

An old Physics-ClassXII-Sample-paper

Solutions to HC Verma's Concepts of Physics :: PART II

CHAPTER 23.HEAT AND TEMPERATURE

CHAPTER 24.KINETIC THEORY OF GASES

CHAPTER 25.CALORIMETRY

CHAPTER 26.LAWS OF THERMODYNAMICS

CHAPTER 27.SPECIFIC HEAT CAPACITIES OF GASES

27.SPECIFIC HEAT CAPACITIES OF GASES(2)

28.HEAT TRANSFER

29.ELECTRIC FIELD AND POTENTIAL

30.GAUSS’S LAW

31.CAPACITOR

32.Electric current in conductors

33.ELECTRIC CURRENT

34.MAGNETIC FIELD

35. MAGNETIC FIELD DUE TO CURRENT

36.PERMANENT MAGNETS

37.MAGNETIC PROPERTIES OF MATTER

38.Electromagnetic induction

39.Alternating current

40.Electromagnetic waves

41.electric current through gases

42.photo electric effect

43.Bohr’s theory and physics of atom

44.X-RAYS

45.Semiconductor and semiconductor devices

46.The Nucleus

47.The special theory of relativity

Chapter wise solutions to H C Verma's Concepts of Physics Part 1

Problems from H C Verma‘s Concepts of Physics is considered a must work out assignment by most of the IIT aspirants.

Here you can find the solutions to the problems chapterwise. The downloads are based on the old edition of HC Verma’s Concepts of Physics. In case the book is revised, the answers and solutions may not match. Students will have to use your senses to find out. We cannot reproduce the questions for reasons known to all.

The solutions can be downloaded in pdf format by clicking on the links below.

1. CHAPTER 1
2. CHAPTER 2
3. CHAPTER 3
4. CHAPTER 4
5. CHAPTER 5
6. CHAPTER 6
7. CHAPTER 7
8. CHAPTER 8
9. CHAPTER 9
10. CHAPTER 10
11. CHAPTER 11
12. CHAPTER 12
13. CHAPTER 13
14. CHAPTER 14
15. CHAPTER 15
16. CHAPTER 16
17. CHAPTER 17
18. CHAPTER 18
19. CHAPTER 19
20. CHAPTER 20
21. CHAPTER 21
22. CHAPTER 22

SEE PART TWO FOR MORE

USEFUL DOWNLOADS

OLD QUESTION PAPER CLASS XII PHYSICS

del-xii-physics-55-1-1

out-xii-physics-55-1

out-xii-physics-55-2

del-xii-physics-55-1-3

for-xii-physics-55-2-2

Happy Holi

HAPPY HOLI

The First T2K Neutrino Event Observed at Super-Kamiokande

Physicists from the Japanese-led multinational T2K collaboration announced today that they had made the first detection of a neutrino which had travelled all the way under Japan from their neutrino beamline at the J-PARC facility in Tokai village (about an hour north of Tokyo by train) to the gigantic Super- Kamiokande underground detector near the west coast of Japan, 295 km (185 miles) away from Tokai.

“It is a big step forward,” said T2K spokesperson Takashi Kobayashi. “We’ve been working hard for more than 10 years to make this happen.”

They have constructed their new neutrino beamline, which will deliver the world’s most powerful neutrino beams, to study the mysterious phenomenon known as neutrino oscillations, and the observation of this event proves that their study can now begin.

“Neutrinos are the elusive ghosts of particle physics,” Kobayashi explains. “They come in three types, called electron neutrinos, muon neutrinos, and tau neutrinos, which used to be thought to be immutable.”

Interacting only weakly with matter, neutrinos can traverse the entire earth with vastly less attenuation than light passing through a window. The very weakness of their interactions allows physicists to make what should be very accurate predictions of their behavior, and thus it came as a shock when measurements of the flux of neutrinos coming from the thermonuclear reactions which power our sun were far lower than predicted. A second anomaly was then clearly demonstrated by Super-Kamiokande, when it showed that the flux of different types of neutrino generated within our atmosphere by cosmic ray interactions was different depending on whether the neutrinos were coming from above or below (which should not have been possible given our understanding of particle physics). Other experiments, such as KamLAND (also performed at Kamioka), have conclusively demonstrated that these anomalies are caused by neutrino oscillations, whereby one type of neutrino turns into another.

“Congratulations from CERN on the first T2K neutrino event seen at Super-Kamiokande,” said CERN Director General Rolf Heuer. “Switching on one of the world’s first neutrino superbeams is a great achievement, and is set to bring great advances in the understanding of this most elusive of particles. Even in a time of financial difficulty around the globe, it’s important not to lose sight of the fact that basic science is and always will be a crucial element of progress. It is therefore heartening to see such an important new basic science initiative getting underway now.”

The T2K experiment has been built to make measurements of unprecedented precision of known neutrino oscillations, and to look for a so-far unobserved type of oscillation which would cause a small fraction of the muon neutrinos produced at J-PARC to become electron neutrinos by the time they reach Super-Kamiokande.

“This first neutrino event marks a great achievement for T2K and a milestone for the fast-growing field of neutrino physics worldwide,” said Fermilab Director Pier Oddone. “We send warmest congratulations from Fermilab, along with our best wishes for the exciting science that will follow.”

Excitement is shared by Dr. Nigel Smith, SNOLAB Director: “SNOLAB warmly congratulates the T2K team on this tremendous milestone for their project, which highlights the great achievements made by this collaboration in the development of new detectors and accelerator technology. The knowledge that T2K will tease out about the elusive neutrino will further our understanding of these sub-atomic particles and their role within the Universe, and why the Universe looks the way it is.” Prof. Dr. Joachim Mnich, Director in charge of High Energy Physics and Astroparticle Physics at DESY also notes: “Warmest congratulations from DESY on seeing the first neutrino event and thus becoming leader in the race to understand the elusive neutrino! Through our long history of collaboration with Japanese scientists and labs we value your work most highly and hope that the T2K project will help make the neutrino less elusive.”

Observing the new type of oscillation would open the prospect of comparing the oscillations of neutrinos and anti-neutrinos, which many theorists believe may be related to one of the great mysteries in fundamental physics — why is there more matter than anti-matter in the universe? “The observation of this first neutrino (see figure) means that the hunt has just begun,” said Prof. Koichiro Nishikawa, Director of the Institute for Particle and Nuclear Studies at KEK and founder of T2K. “The first physics results are expected later this year. This is the beginning. I am waiting for a lot more to come soon!”

Background: The T2K collaboration consists of 508 physicists from 62 institutes in 12 countries (Japan, South Korea, Canada, the United States, the United Kingdom, France, Spain, Italy, Switzerland, Germany, Poland, and Russia). The experiment consists of a new neutrino beamline using the recently constructed 30 GeV synchrotron at the J-PARC laboratory in Tokai, Japan, a set of near detectors constructed 280m from the neutrino production target, and the Super-Kamiokande detector in western Japan.

Year 11 Student from Lilydale Heights College wins Science Scholarship.

MORGAN Campbell, a year 11 student from Lilydale Heights College is pictured on her return from a 12 day National Youth Science Forum held in Perth.

Recently sponsored on the trip by Croydon Rotary Club and her mum and dad Morgan was one of 20 students selected across Victoria to attend the prestigious event with the choice of attending a Forum in Perth or Canberra.

The NYSF gave her the opportunity to see other parts of the scientific field which are not normally available within the school setting. These included Environmental Sciences, biological sciences, forensics medicine and much more.

Nominated for the scolarship by her physics teacher Ms Barr, she had to attend interviews with Croydon Rotary Club and representatives of the NYSF to assess her suitability for the award.

Her days in Perth consisted of University visits, lectures, tours, seminars which made the experience go quickly but made it more memorable..

She says “ To me the NYSF was more than a science camp, more than an experience of a lifetime. It was something that connot be described in words but can only be felt. It has helped me to decide on a future career and where I want to attend university. More importantly it has given me a new found pride and confidence that I never knew I had”.

Well done Morgan!