PHYSICS F/SCI.+ENGR.,V.1 (CHAP.1-20)
5th Edition
ISBN: 9780134378053
Author: GIANCOLI
Publisher: RENT PEARS
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Chapter 34, Problem 20P
(II) In a two-slit interference experiment, the path length to a certain point P on the screen differs for one slit in comparison with the other by 1.25λ. (a) What is the phase difference between the two waves arriving at point P? (b) Determine the intensity at P, expressed as a fraction of the maximum intensity I0, on the screen.
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(c) Light of wavelength 690 nm passes through two slits which are separated
by 0.6 mm. The screen is 1.5 m away. A second source of unknown
wavelength produces light and dark fringes which are 1.13 mm closer
together than the 690 nm light. What is the wavelength of the unknown
light?
(b) Coherent light is diffracted by a single slit which is 15 µm wide. The central
maximum of the diffracted light has a width of 1.4 cm when it falls on a
screen 0.15 m behind the slit. Determine the wavelength of the incident
light.
(i) State the importance of coherent sources in the phenomenon of interference.
(ii) In Young’s double slit experiment to produce interference pattern, obtain the conditions for constructive and destructive interference. Hence deduce the expression for the fringe width.
(iii) How does the fringe width get affected, if the entire experimental apparatus of Young is immersed in water?
Chapter 34 Solutions
PHYSICS F/SCI.+ENGR.,V.1 (CHAP.1-20)
Ch. 34 - Prob. 1QCh. 34 - What is the evidence that light is energy?Ch. 34 - Why is light sometimes described as rays and...Ch. 34 - We can hear sounds around corners but we cannot...Ch. 34 - Can the wavelength of light be determined from...Ch. 34 - Two rays of light from the same source...Ch. 34 - Monochromatic red light is incident on a double...Ch. 34 - If Youngs double-slit experiment were submerged in...Ch. 34 - Compare a double-slit experiment for sound waves...Ch. 34 - Suppose white light falls on the two slits of Fig....
Ch. 34 - Why doesnt the light from the two headlights of a...Ch. 34 - Why are interference fringes noticeable only for a...Ch. 34 - Prob. 14QCh. 34 - Some coated lenses appear greenish yellow when...Ch. 34 - A drop of oil on a pond appears bright at its...Ch. 34 - (II) Derive the law of reflectionnamely, that the...Ch. 34 - (II) Suppose a thin piece of glass is placed in...Ch. 34 - (I) If one slit in Fig. 3412 is covered, by what...Ch. 34 - (II) In a two-slit interference experiment, the...Ch. 34 - (II) (a) What is the smallest thickness of a soap...Ch. 34 - (III) The yellow sodium D lines have wavelengths...
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