1. When 2 point sources emit waves and the two waves meet it is called…
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When 2 point sources emit waves and the two waves meet it is called…

2. Write down your answers …
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The Angle at which a wave (e.g. light) refracts at a boundary of two mediums – measured relative to the normal is called…

3. Lines of constructive interference where crest meets crest are called…
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Lines of constructive interference where crest meets crest are called…

4. Write down your answers …
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A mirror that converges (focuses) waves (e.g. light) as wave is reflected from it is called…

5. Write down your answers …
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The minimum angle which produces total internal reflection – measured relative to the normal is called…

6. Write down your answers …
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The bending of waves around a barrier/gap (provided barrier/gap is about same as wavelength of wave) is called…

7. Write down your answers …
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The family of waves (e.g. light) that don’t require medium, are transverse and travel at 3 x 108 ms-1 are called…

8. 8. The point where parallel rays converge or would converge is called…
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The point where parallel rays converge or would converge is called…

9. 9. The number of waves passing a point per second is called…
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The number of waves passing a point per second is called…

10. 10. The boundary between two different media is called…
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10.
The boundary between two different media is called…

11. Write down your answers …
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11.
Finding the distance between the pole of the lens / mirror and the image produced is called…

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12.
Stating whether the image is real / virtual, inverted/non-inverted, magnified / diminished is called stating…

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13.
The distance from centre of curvature to pole of lens / mirror (twice the focal length) is called…

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14.
The ratio of wave speed (e.g. light) in one medium compared to another is called…

15. Write down your answers …
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15.
A longitudinal wave that requires a medium (travels at 340ms-1 in air) is called…

16. Get ready to see the 15 questions again!!!