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Sample Topics

Gravitation

Sample Questions:

Q1.  The strengths of the interactions in nature, from strongest to weakest, are in the order

a. strong, weak, electromagnetic, gravitational. b. strong, electromagnetic, weak, gravitational.

c. strong, gravitational, electromagnetic, weak.

d. strong, electromagnetic, gravitational, weak.

e. gravitational, electromagnetic, weak, strong. 

Q2. Two objects attract each other gravitationally. If the mass of each object doubles, how does the gravitational force between them change?The gravitational force decreases by a factor of 4.

The gravitational force increases by a factor of 4.

The gravitational force remains unchanged.

The gravitational force decreases by a factor of 2.

The gravitational force increases by a factor of 2. 

Q3. Is Gravitational Potential and Gravitational Potential Energy are same? 

Q4. A pendulum swings in a vertical plane. At the bottom of the swing, the kinetic energy is 8 J and the gravitational potential energy is 4 J. At the highest position of its swing, the kinetic and gravitational potential energies are a) kinetic energy = 0 J and gravitational potential energy = 4 J.b) kinetic energy = 12 J and gravitational potential energy = 0 J. c) kinetic energy = 0 J and gravitational potential energy = 12 J. d) kinetic energy = 4 J and gravitational potential energy = 8 J.e) kinetic energy = 8 J and gravitational potential energy = 4 J.

SHM

Sample Questions:

Q1. Find a derivation of SHM from Newton’s second law.

Q2. Find a derivation for the energy relationships for SHM.

Q3. Symbolically, write out the full position function for each (as a function of period rather than angular frequency):  

1. SHM spring system  

2. SHM pendulum system   

Q4. At a time of 2.00 x 102, s after starting its SHM from maximum displacement, a mass on a spring has a displacement that is +2.65 cm from the equilibrium position. If the frequency of the SHM Is +2.76 Hz, what Is the amplitude of the SHM? _______cm

Fluid Mechanics and Aerodynamics

Sample Questions:

Q1.  What is the difference between fluid mechanics and fluid dynamics? 

Q2. What is fluids mechanics? 

Q3. Give examples of disturbances for the following:·      


  • Solid Mechanics

  • Fluid Mechanics

  • Heat Transfer 


Q4. What is the velocity magnitude in a plenum?

Wave theory

Wave Theory: it deals with the study of the propagation of energy through space.
Sample Questions:

Q1. Wave theory selection example

Water depth=1 m

Wave period=7s

Wave height=0.3m

Find the best wave theory 

Q2. What are some differences between Airy wave theory (classical) and long wave theory? Provide at least 4 major differences.

Q3. Who is credited with the wave theory of light? 

Q4. Which theory of light, the wave theory or the particle theory, did the findings of Young, Maxwell, and Hertz support?

Optics

Sample Questions:

Q1. What is the difference between geometric optics and physical optics? 

Q2. When can we use ray optics to characterize our system as opposed to physical optics. In physical optics, we consider processes such as diffraction and interference. In ray optics, we do not. 

Q3. What is the different between nonlinear and linear optics? And also give an example of nonlinear optics? 

Q4. What is the advantage of using a microscope with dark-field optics compared to a microscope with bright-field optics?

Thermodynamics

Thermodynamics: This branch gives the reason of transforming heat from one form of energy to other
Sample Questions:

Electrostatics

Sample Questions:

Q1. Name the differences between an electrostatic field and an electrostatic force 

Q2. How is a low voltage two stage electrostatic precipitator different from a high voltage single stage electrostatic precipitator? Explain the operation of a plate type electrostatic precipitator. Include a schematic view of the electrostatic precipitator and mention the size-efficiency relationship. 

Q3. Ionic bonds dearly result from electrostatic attraction between ions. In what way do covalent bonds also involve electrostatic attraction? 

Q4. Applications of Electrostatics What are the similarities and differences between the processes in a photocopier and an electrostatic precipitator?

Theory of Relativity

Sample Questions:

Q1. What is special about the special theory of relativity?

Q2. Does theory of relativity hold for motions on earth??

Q3. List five major predictions of the special theory of relativity

Q4. What was one of the key early tests of Einstein’s General Theory of Relativity?

Modern Physics

Sample Questions:

Q1. What is modern physics? 

Q2. Classical physics is a good approximation to modern physics under certain circumstances. What are they?

Q3. What is one situation in classical modern physics, that an experiment was defined using quantum theory? 

Q4. A further discussion on the role of modern physics in the invention of lasers.