Olympiad Test: Light, Shadows and Reflections - Class 6 MCQ

The image formed in the plane mirror is always of the same size as that of the object.

When at convergence point O, a convergent beam of light is incident on the plane mirror, a real image is formed at the point I.

Book is an opaque object and hence does not allow the light of torch to pass through it. As there is no light on the ring, hence no image will be formed and the screen will remain dark due to absence of any light ray.

Figure (iii) is periscope which is used to see around the corners. It is based upon the principle of rectilinear propagation of light and reflection of light.

A colored plastic bottle is an opaque material. When a light beam is incident on it, a shadow will form on the screen can easily pass through the transparent material.

The distance of the object from the mirror is the same as the distance of the image of object from the mirror.

The image formed by the pinhole camera on the screen is real and inverted. Light changes its direction after reflection. As we move the object away from the light source, the shadow becomes larger as the distance between object and the light source increases. Irregular reflection occurs from a rough surface.

According to the law of reflection, angle of incidence should be equal to the angle of reflection.

Light rays coming from W, X, Y and Z, after reflection from the mirror can possibly reach P. Therefore, all of the four points can be visible.