Physics Past Questions and Answers

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?