What is Higgs Boson?
Why do we need Higg’s Boson? Helen Heath explains why the Standard Model needs the Higgs boson.
http://physicsworld.com/cws/article/multimedia/50419
Gordon Fraser and Michael Riordan argue that the boson discovered at CERN should be known not as the Higgs boson, but the “higgson”
Read more at http://physicsworld.com/cws/article/print/2012/jul/04/introducing-the-higgson
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Categories: +2 Physics, Ask Physics, Modern Physics, PHYSICS Tags: boson, Cern, higgs boson, large hadron collider, Michael Riordan, particle, Physics, standard model
SEMICONDUCTOR DEVICES–CLASS 12 PHYSICS QUESTION BANK
1. Draw a circuit diagram of OR gate.
2. What is a logic gate?
3. What types of charge-carriers are there in a n-type semi conductor?
4. Give the logical symbol of an AND gate. Mark the inputs and outputs.
5. Draw the logic symbol for a NAND gate.
6. Which biasing will make the resistance of p-n junction high?
7. Write the truth table for OR gate.
8. What is the change in the collector current, in a transistor of a.c. current gain 150, for a 100µA change in its base current?
9. When the voltage drop across a p-n junction diode is increased from 0.65V to 0.70V, the change in the diode current is 5mA. What is the dynamic resistance of the diode?
10. How does conductivity of a semiconductor change with rise in its temperature? Read more…
