engineering recuitment BEL Probationary Engineers Mock Test 2025 Physics Waves The speed of a travelling wave
A radar is able to detect the reflected waves from an enemy's aeroplane after a time interval of 0.02 × 10−3 sec. If the velocity of the waves is 3 × 108 m/s. The distance of the aeroplane from the Radar will be :
1
1.0 km
2
1.5 km
3
3.0 km
4
6.0 km