Download MBBS TMU Final Year 2015 MBBS403B Obstetric and Gynaecology II Question Paper

B.Tech I Semester (R20) Supplementary Examinations May - 2023

ENGINEERING PHYSICS

(Common to ECE, CSE, CSIT, AI&DS, AI&ML & IT)

Time: 3 hours Max. Marks: 70

Note: Answer all questions from Part – A & Part – B.

PART – A (10 x 2 = 20 Marks)

1. Define interference and diffraction.
2. What are the differences between spontaneous and stimulated emissions?

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3. Define magnetic susceptibility and permeability.
4. What is meant by hole current in semiconductors?
5. Define reverberation time and write Sabine’s formula.
6. Mention any two applications of optical fibers.
7. Write Schrodinger’s time independent wave equation.

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8. What are the important features of nanomaterials?
9. Distinguish between intrinsic and extrinsic semiconductors.
10. Define piezoelectric effect.

PART – B (5 x 10 = 50 Marks)

Note: Answer all questions. Each question carries 10 marks.

1. 11. (a) Describe the formation of Newton’s rings in reflected light and explain how to determine the wavelength of light using Newton’s rings. [5M]

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   (OR)

   (b) Explain the principle, construction and working of a Ruby laser. [10M]

2. 12. (a) Explain the origin of magnetic moment in materials. Derive the relation between magnetic susceptibility and temperature. [10M]

   (OR)

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   (b) Describe the drift and diffusion currents and derive Einstein’s relation. [10M]

3. 13. (a) What is meant by absorption coefficient? Explain experimental determination of absorption coefficient. [10M]

   (OR)

   (b) Explain the principle and propagation of light in optical fibers. Deduce the expression for acceptance angle and numerical aperture. [10M]

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4. 14. (a) Derive Schrodinger’s time independent wave equation and explain its physical significance. [10M]

   (OR)

   (b) Describe the sol-gel method for production of nanomaterials. Explain the applications of nanomaterials. [10M]

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5. 15. (a) Explain the formation of P-N junction diode and discuss the V-I characteristics. [10M]

   (OR)

   (b) Explain the principle, construction and working of a Piezoelectric Oscillator. [10M]

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