by Sunday | Sep 2 | Physics WAEC
A sound pulse sent vertically downwards into the earth is reflected from two different layers of the earth such that echoes are heard 1.2s and 1.4s. Assuming speed of the pulse is 2000ms−¹; calculate the distance between the layers. A. 200 m B. 400 m C. 2400 m D. 2600...
by Sunday | Sep 2 | Physics WAEC
A. flute B. trumpet C. piano D. drum E. saxophone Correct Answer: Option C – piano
by Sunday | Sep 2 | Physics WAEC
A. the wavelength B. thrice the wavelength C. one-half of the wavelength D. one-quarter of the wavelength E. three-quarters of the wavelength Correct Answer: Option D – one-quarter of the wavelength
by Sunday | Sep 2 | Physics WAEC
A. diminished B. enlarged C. upright D. inverted E. blurred Correct Answer: Option D – inverted