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  4. When a low flying aircraft passes overhead, we sometimes notice a slight shaking of the picture on our TV screen. This is because of between the direct signal and reflected signal

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Q. When a low flying aircraft passes overhead, we sometimes notice a slight shaking of the picture on our TV screen. This is because of between the direct signal and reflected signal

Wave Optics

Solution:

A low flying aircraft reflects the T.V signal. The slight shaking on the TV screen may be due to interference between the direct signal and the reflected signal.