The sketch to the right shows a light ray shown moving from air into water. at 4

Question

The sketch to the right shows a light ray shown moving from air into water. at 45 degree to the normal. Which of the three rays indicated with capital letters is most likely the light ray that continues into the water? The sketch on the left shows a light ray y moving from glass into 30 degree to the normal Which of the three is most likely the light ray that continues in the air? To the right, a light ray is shown moving from air into a glass block at 40 degree to the normal Which of the three rays is most likely the light ray that travels in the air after emerging from the opposite side of the block? (Sketch the path the light would take inside the glass.) To the left, a light ray is shown moving from water into a rectangular block of air (inside a thin walled plastic box), at 40 degree to the normal. Which of the rays is most likely the light ray that continues into the water on the opposite side of the block?______ Sketch the path the light would take inside the air

Explanation / Answer

1. C light passing from Air(rarer medium) to glass (denser medium) hence light bends towards the normal

2. A : light passing from glass (denser medium) to air ( lighter medium) , hecne light ray bends away from the normal

3. A : light ray bends towards normal at the first air-glass boundary and then bends away from the normal at the second glass-air boundary, in the process the ray emerges pralle to the incident ray but is shotedd to the left

4. C : light travels from denser to rarer medium and then again into denser medium, similar to 3 but reverse the bending.

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