Properties of light and pinhole camera O level

Sources of light, transparent medium, translucent medium, opaque medium, rays, types of beams, Rectilinear propagation of light, experiments to show that light travels in straight line, shadows from point source and extended source of light, eclipses of the sun and moon, image formation in pinhole camera, properties of images formed by pinhole camera, factors affecting images formed by pinhole camera, lens camera, differences between pinhole and lens camera, differences between lens camera and the eye.