An incident ray is reflected normally by a plane mirror onto a screen where it forms a bright spot. The mirror and screen are parallel and 1m apart. If the mirror is rotated through 5º, calculate the displacement of the spot
Convex spherical mirrors are preferred to plane mirrors as driving mirrors because
A piece of cloth appears green in sunlight. When held in red light, it will appear
Dispersion of white light by a glass prism occurs because
