Physics Past Questions and Answers

Light travelling through a small pinhole usually does not make a shadow with a distinct sharp edge because of

The angle of incidence of a ray of light on a plane mirror is 55^o. Determine the angle between the reflected ray and the mirror

A concave mirror forms a magnified and errect image only when the object is placed

A thin lens is placed 50cm from an illustrated object. The image produced has linear magnification of \(\frac{1}{4}\). Calculate the power of the lens in dioptres

Which of the following characteristics of light determines its colour?