Answer the questions : Two students are separated by a 7 m partition wall in a room 10 m high. If both light and sound waves can bend around obstacles, how is it that the students are unable so see each other even though they can converse easily.

Answer the questions : Two students are separated by a 7 m partition w

1.	Answer the questions : Two students are separated by a 7 m partition wall in a room 10 m high. If both light and sound waves can bend around obstacles, how is it that the students are unable so see each other even though they can converse easily.
Answer» For diffraction the size of the obstacle should be comparable to wavelength if the size of the obstacle is much too large compared to wavelength, diffraction is by a small angie. Here the size partition of wall is of the order of few metres. The wavelength of light is about `5 xx 10^(-7)m,` while sound waves of say 1 kHZ frequency have wavelength of about 0.3 m. Thus sound waves can bend around the partition while light waves cannot.

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Answer the questions : Two students are separated by a 7 m partition wall in a room 10 m high. If both light and sound waves can bend around obstacles, how is it that the students are unable so see each other even though they can converse easily.

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