Radio waves are sent towards a moving aeroplane by a radar and the reflected waves are received by the radar. If the aeroplane is moving towards the radar, then the wavelength of the reflected wave__________
A. Increases
B. Decreases
C. Both A and B
D. None
Answer:B
Radio waves are sent towards a moving aeroplane by a radar and the reflected waves are received by the radar. If the aeroplane is moving towards the radar, then the wavelength of the reflected wave__________
A. Increases B. Decreases C. Both A and B D. None