Лекция: PART 2: SHORT-ANSWER QUESTION
Тесты посмотрите в комментариях
2.1. The free end of the string is made to oscillate with frequency f such that a stationary wave is established on the string. The diagram below illustrates the standing wave.[EG1]
Explain, by reference to the principle of superposition, the formation of a stationary wave. (1)
2.2. Why microwaves ovens have turntable or rotating plate?[EG2] (1)
2.3. Give two (2) conditions required it two source interference fringe are to be observe.[EG3] (2)
2.4. A star can be classified in terms of luminosity. Define luminosity[EG4]. (1)
Luminosity – the amount of energy radiated by the star per second
2.5. What is meant by the term absolute magnitude of a star?[EG5] (1)
Вопрос который мы не нашли в слайдах. Найдите сами в интернете.
2.6. A parallax method is used to define a common unit of distance in Astronomy, the parsec. Define parsec.[EG6] (1)
Parsec is another convenient unit for measuring large distance
[Total: 7]