Physics · Ray Optics
Consider an extended object completely immersed in water contained in a plane glass trough. When viewed obliquely from close to the edge of the trough, the object looks distorted primarily because:
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- 1the apparent depth of points closer to the edge is nearer the surface compared to points further away from the edge.✓
- 2the angle subtended by the image of the object at the eye is smaller than the actual angle subtended by the object in air.
- 3some points of the object far away from the edge undergo total internal reflection and become invisible.
- 4water in a plane trough acts as a convergent lens and magnifies the object.
Correct answer
the apparent depth of points closer to the edge is nearer the surface compared to points further away from the edge.
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