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The Pamphlet Collection of Sir Robert Stout: Volume 50

The University of New Zealand. — Entrance Examination, 1885—Junior Scholarships. — Sound and Light

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The University of New Zealand.

Entrance Examination, 1885—Junior Scholarships.

Sound and Light.

1.How has the velocity of sounds in liquids and solids been determined? Upon what properties does the velocity of sound in a substance depend?
2.What are the laws of the vibration of strings? A string is made to vibrate by means of a tuning fork kept vibrating by electricity, it breaks into three segments with a tension of 4lbs.; what weight will make it vibrate as a single segment?
3.Describe and give illustrations of resonance and sympathy of vibration.
4.How has the character of a compound tone, such as the note of a string, been determined?
5.What are the chief arguments for the undulatory theory of light?
6.Describe three different modes for comparing the intensities of two lights.
7.Explain what is meant by the spherical abberation of a concave mirror. Show how an image is formed in such a mirror.
8.Show by a diagram how a simple lens magnifies an object, and trace the course of the rays in a compound microscope.
9.Draw diagrams showing the course of a solar ray and of a sodium ray passing through a prism. What is the difference between a yellow light produced by coloured glass and by burning sodium, when examined by a spectroscope?
10.Give a general account of the phenomena of polarized light. Can sound be polarized?