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| 1. |
A rod immersed horizontally in water does not appear small when is viewed normally but appears small if it is kept vertically. Explain. |
| Answer» Solution :When the ROD is kept horizontally under water, every point of the rod appears to be upward equally due to refraction. So, length of the rod appears to be same. But if the rod is immersed vertically, different points of the rod appear to be upward with different DISTANCES and from image. Since apparent displacement of a point depends on its depth, apparent displacement of the lower point of the rod is larger than the higher point. Thus, apparent displacement of the lowest and higher points of the rod are maximum and minimum respectively. So the rod appears to be SMALL. | |