True/False
1)Specular reflection obeys the laws of reflection while diffuse reflection does not.
False. drwls said its true but I disagree can you please explain.
2)A convex lens is used to obtain an enlarged virtual image.
True.
1) The answer depends upon what you call the "laws" of reflection. The angle of incidence is NOT equal to the angle of reflection, for a diffuse reflector.
I explained my answer before. Light that is diffusely reflected is reflected at many angles, not just one. That is why images cannot be seen in a diffuse reflector, such as a piece of paper.
2) "True" is correct sometimes, such as with a magnifying glass, but convex lenses can also form real images. In a refracting telescope, one convex lens can be used as the objective to form a real image and a second (eyepiece) convex lens can form a virtual image of the first image.
Simple convex lenses, and especially plano convex lenses, are seldom used in optical systems such as cameras and telescopes because their image-forming properties are relatively poor.
To verify whether the statement "Specular reflection obeys the laws of reflection while diffuse reflection does not" is true or false, we need to understand the concepts of specular and diffuse reflection.
1) Specular reflection refers to the reflection of light from a smooth surface, such as a mirror, where the incident light rays reflect at equal angles to the surface normal. It follows the laws of reflection, which state that the angle of incidence is equal to the angle of reflection. This type of reflection results in a clear and well-defined reflection.
2) Diffuse reflection, on the other hand, occurs when light reflects off a rough or irregular surface. The incident light rays reflect in multiple directions, making it difficult to determine a specific angle of reflection. This type of reflection is commonly seen in non-polished surfaces, such as paper or walls.
Now, considering the statement, it is actually True that specular reflection obeys the laws of reflection while diffuse reflection does not. Specular reflection follows the laws of reflection as the angle of incidence is equal to the angle of reflection, whereas diffuse reflection does not have a well-defined angle of reflection due to the scattered nature of reflected light.
Moving on to the second statement:
2) It is True that a convex lens can be used to obtain an enlarged virtual image. A convex lens is thicker in the middle and thinner at the edges, causing it to converge light rays towards the focal point after refraction. When an object is placed between the focal point and the lens, an enlarged and virtual image is formed on the opposite side of the lens. This property of convex lenses is used in many optical devices, such as magnifying glasses and telescopes, to create magnified virtual images.