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? |