Phys 102:Waves And Optics Question Paper
Phys 102:Waves And Optics
Course:Computer Science
Institution: Kenya Methodist University question papers
Exam Year:2012
WAVES AND OPTICS (PHYS 102) 3RD TRIMESTER 2012
KENYA METHODIST UNIVERSITY
END OF 3''RD ''TRIMESTER 2012 (DAY) EXAMINATIONS
FACULTY : SCIENCE & TECHNOLOGY
DEPARTMENT : PURE AND APPLIED SCIENCE
UNIT CODE : PHYS 102
UNIT TITLE : WAVES AND OPTICS
TIME : 2 HOURS
INSTRUCTIONS
Answer any THREE questions.
Question One
Briefly explain
(6 Marks)
Interference.
Diffraction.
Polarization
Explain the meaning of "out of phase."
(4 Marks)
Briefly describe Young’s Experiment.
(10 Marks)
Question Two
Describe Dispersion of light waves.
(6 Marks)
Laser light (5000A) passes through a double slit arrangement 0.05mm apart. The screen is 1m away from slits
Find Fringe separation.
Find distance between 2nd bright and 3rd dark on opposite sides.
(14 Marks)
Question Three
How would you demonstrate that a beam of light is completely polarized?
(8 Marks)
A parallel beam of unpolarized light is incident at an angle of 58o on a plane glass surface. The reflected beam is completely polarized. What is
The refractive index of the glass.
The angle of refraction of the transmitted beam?
(12 Marks)
Question Four
The equation y =A sin (wt + kx) represents a progressive wave
What do the quantities A, w and k represent?
(6 Marks)
In which direction is the wave moving? (Explain how you arrived at your conclusion).
(14 Marks)
Question Five
What do you understand by (give one example of each)
(9 Marks)
Free vibrations.
Resonance.
Forced vibrations.
Explain what is meant by
(6 Marks)
Pitch.
Quality of a musical note.
What is the Doppler Effect?
(5 Marks)
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