1999 - WAEC Physics Past Questions and Answers - page 3
A ray of light is incident on 'a plane mirror at an angle of 20o. This mirror is rotated through, twice this angle, In this new position the angle between the incident ray and the reflected ray is
The air column in a resonance tube is set into resonance by a vibrating tuning fork. The resultant waves in the air column will be
The image of an object is located 6cm behind a convex mirror. If its magnification is 0.6, calculate the focal length of the mirror
The refractive index of glass for yellow light is greater than that for red light because yellow light
The real image of an object formed by a converging lens of focal length 15cm, is three times the size of the object. Calculate the object distance
Which of the following statements is not correct about long sight?
The amplitude of a wave is the
ln order to obtain a sound note of a high pitch from a wire stretched by a constant tension, the wire must be
If the position of resonance in a resonance tube is 16.50cm from open end of the tube, calculate the distance from the open end to the next position where resonance occurs. (Neglect end-correction)
Thunder is usually heard some seconds after lightning is observed because