PH8252 important questions Physics for Information Science
PH8252 important questions Physics for Information Science important questions for regulation 2017 in Anna University.
The PH8252 important questions is available in this page for download.
|Subject Name||PHYSICS FOR INFORMATION SCIENCE|
Sample PH8252 important questions PHYSICS FOR INFORMATION SCIENCE:
Define mean free path.
The average distance traveled by a free electron between any two
successive collisions in the presence of an applied field is known as mean free
path. It is the product of drift velocity of the electron (vd) and collision time (τ)
λ= vd ×τc
1. The co-efficient of electrical conductivity is defined as the quantity of
electricity flowing per unit area per unit time maintained at unit potential
2. Electrical conductivity is purely due to number of free electrons.
3. Conduction of electricity takes place from higher potential end to the lower
What is Fermi level in a semiconductor?
Fermi level in a semiconductor is the energy level situated in the band gap
of the semiconductor. It is exactly located at the middle of the band gap in the
case of intrinsic semiconductor.
What is an intrinsic semiconductor?
Semiconductor in an extremely pure form (without impurities) is known as
What are paramagnetic materials?
The magnetic materials which exhibit paramagnetism are called
What is non-linear optics?
The field of optics dealing with the non-linear behavior of optical materials.
What are the applications of metallic glasses?
Metallic glasses possess high tensile strength. They are superior than
common steels. This makes them useful as reinforcing elements in concrete,
plastic or rubber.
Due to their high strength, high ductility, rollability and good corrosion
resistance, they are used to make razor blades. This fact is also utilized to
make different kinds of springs.
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