Pdf physics

DIPLOMA SEMESTER EXAMINATION - 2021

Course: COMMON TO ALL ENGINEERING

Code: 991003

Subject: Applied Physics - I

I Year/I Sem

Time: 2½ Hours | Max. Marks: 50

Note: Attempt all three sections. Assume English Version Correct if there is any difference in the Hindi Version.

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Section-A

Note: Attempt any Ten questions.

1. Fermi is the unit of ...
2. 1 KWh = ... ergs.
3. If A, B, and C are mutually perpendicular vectors, then find the value of A.(B+C).
4. 1 Pascal = ... poise.
5. All central forces are...
6. Angle of friction = Angle of ...
7. Magnetostriction method is used in the production of...
8. Decibel is the unit of...
9. The number of significant figures in 6.67 x 10⁵ is ...
10. Density of water is maximum at ... temperature.
11. Speed of sound in air = ... m/sec, at 0°C temperature.
12. State Bernoulli's theorem.

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Section-B

Note: Attempt any Five questions.

1. Explain the law of conservation of energy for a freely falling body.
2. Explain stress-strain behavior of material.
3. State and explain conservation of angular momentum.
4. State and explain the work-energy theorem.
5. Write the limitations of dimensional analysis.
6. A body of mass 50 kg has a momentum of 1000 kg·m/s. Calculate its kinetic energy.
7. Define (i) Viscosity (ii) Time period (iii) Resonance.

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Section-C

Note: Attempt any Five questions.

1. Define simple harmonic motion. Derive an expression for the total energy of a particle executing SHM.
2. Find the value of 60 joule/minute on a system which has 100 gm, 100 cm, and 1 minute as fundamental units (using dimensions).
3. State Stoke's Law. Derive an expression for terminal velocity.
4. Define torque and moment of inertia and deduce a relation.
5. What is reverberation time? Explain the method of controlling reverberation.
6. Explain friction, its types, and its advantages and disadvantages in daily life.
7. Define centripetal force and deduce an expression.