Physics Past Questions and Answers

The focal length of the eye-piece of an astronomical telescope is f<sub style='font-size: smaller;'>1</sub>, while the focal length of the object is f<sub style='font-size: smaller;'>2</sub>. Fro normal adjustment, the angular magnification is given by

two sound waves have frequencies of 12Hz and 10Hz. Calculate their beats period

The main difference between echo and reverberation is that

Which of the following statements about the electromagnetic waves is correct?

The correct relationship between "G" and "g" in a gravitational field is given by the equation (Where the symbols have their usual meanings)