First Assignment 2006-2007 ENGINEERING PHYSICS (A)

Sree Narayana Guru College of Engineering and Technology, Payyanur
First Assignment 2006-2007
ENGINEERING PHYSICS (A)

1.Explain Fresnel’s and Fraunhoffer diffraction. (2004,2005)
2.Write any four applications of polarized light. (2004)
3.Describe double refraction in crystals. (2004).
4.Explain zero point energy. (2004)
5.Explain how the wavelength of the sodium light is determined by forming wedge shaped air film. Derive the formula used. (2004)
6.In a Newton’s rings system a convex lens of radius of curvature 1m is placed in contact with a flat plate. Calculate the radii of (1) the 3rd dark ring and (2) the 3rd bright ring of the interference pattern produced by the light of wavelength 5000 Å. (2004)
7.Explain with necessary theory the production and detection of circularly polarized light. (2004,2005)
8.Calculate the specific rotation if the plane of polarization is turned through 26.40 traversing 20cm length of 20% sugar solution. (2004,2005)
9.Derive the time dependent Schrödinger’s wave equation for a free particle. (2004)
10.Explain the basic principle of electron spin resonance. (2004,2006)
11.Explain with diagram how ultrasonics are generated by piezoelectric method. (2004,2005,2006)
12.Mention the properties of ultrasonics. (2004,2005)
13.Write briefly how elliptically polarized light can be detected. (2005)
14. Discuss with necessary theory, the Newton’s rings experiment to determine the wavelength of sodium light. (2005)
15. An air wedge of angle 0.01 rad is illuminated by monochromatic light of 6000 Å falls normally on it. At what distance form the edge of the wedge will the 10th fringe be observed by the reflected light. (2005)
16.Explain how plane polarized light is produced and detected. (2005)
17.Explain a wavefunction(2005,2006)
18.Setup the equation for the time independent Schrödinger’s equation. (2005)
19.With the basic principle explain any one application of NMR. (2005)
20.Mention the applications of ultrasonics. (2005,2006)
21.Write a brief note on half wave plate. (2006)
22.Explain how optical planeness of surfaces can be tested. (2006)
23.Describe the theory of a plane transmission grating and describe how it is used to determine the wavelength of light. (2006)
24.What is the highest order spectrum, which may be seen with monochromatic light of wavelength 6000 Å by means of a diffraction grating with 5000 lines/cm. (2006)
25.Explain optical activity and specific rotation. Describe how half shade polarimeter is used to determine the specific rotation of glucose. (2006)
26.A soap film 5x10-5 cm thick is viewed at an angle of 350 to the normal. Find the wavelength of light in the visible spectrum which will be absent from the reflected light. Given μ =1.33 (2006)
27.Distinguish between Newtonian and quantum mechanics. By assuming time independent Schrödinger’s equation find eigen values and eigen functions for a particle in a box. (2006)
28.Explain the methods of detecting ultrasonics. (2006)

LAST DATE FOR SUBMISSION: 02-02-2007