Question
Physics Question on Wave optics
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
A
interference
B
diffraction
C
polarisation of direct signal
D
Both (b) and (c)
Answer
interference
Explanation
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.