Question

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

• A. interference
• B. diffraction
• C. polarisation of direct signal
• D. Both (b) and (c)

Answer 1

Answer: (A)

interference

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