Anna university PH2111 Engineering Physics 1 Question Bank Important 2 mark questions

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ANNA UNIVERSITY PH2111 Engineering Physics 1 QUESTION BANK LATEST FOR FIRST YEAR FIRST SEMESTER STUDENTS

ANNA UNIVERSITY PH2111 Engineering Physics 1 QUESTION BANK LATEST FOR FIRST YEAR FIRST SEMESTER STUDENTS JAN 2013-2014

THIS QUESTION PAPER IS FOR REFERENCE PURPOSE ONLY.

THE FOLLOWING QUESTION PAPER CAN BE APPLICABLE FOR ANNA UNIVERSITY CHENNAI, TRICHY, COIMBATORE, TIRUNELVELI, MADURAI STUDENTS 2008 REGULATION APPLICABLE FOR STUDENTS IN THE YEAR 2012 ALSO

ANNA UNIVERSITY PH2111 Engineering Physics 1 QUESTION BANK

B.E/B.TECH DEGREE EXAMINATION, JAN 2013

FIRST SEMESTER

PH2111 Engineering Physics 1

REGULATION 2008

ANNA UNIVERSITY PHYSICS 1 2 MARKS QUESTION BANK/IMPORTANT REPEATEDLY ASKED QUESTIONS

• What is meant by splicing in fibre optics?
• Explain degenerate and non-degenerate states.
• List down the disadvantages of piezoelectric efect.
• What is meant by Frenkel imperfection?
• What is cavitation?
• What is the principle of pulse echo system?
• What are different methods of achieving population inversion?
• Compare transmission and refection modes of non destructive testing using ultra-sonics.
• Write an expression for the Compton wavelength
• A signal of 100 mW is injected into a fibre. The outcoming signal from the other end is 40 mW. Find the loss in dB? annaunivedu . in 
• Mention any two properties of ultrasonic waves.
• Why is population inversion necessary to achieve lasing?
• How is electrons and holes confnement made in the active region of heterojunction laser?
• What are Frenkel and Schottky imperfections?
• Give the applications of the fibre optical system.
• What are the different types of classifcation of optical fbres?
• Explain dispersion in an optical fiber.
• What is Compton effect?
• For a cubic crystal draw the planes with Miller indices (110) and (001).
• What is sonogram?
• Calculate the equivalent wavelength of electron moving with a velocity of 3 × 107 m/s
• Calculate de Broglie wavelength of an electron moving with velocity 107 m/s.
• Defne blackbody and blackbody radiation.
• What is meant by wave function?
• Defne acceptance angle of a fbre.
• An element has a HCP structure. If the radius of the atom is 1.605ºA, fnd the
  height of unit cell.
• Distinguish between homojunction and heterojunction semiconductor lasers.
• What i s meant by a `Schottky pair'
• What is holography?.